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I want to build a small cheap greenhouse and I want to know if I can use think nylon or net to cover the roof

Use net for roofing. Plant needs sun light to make their food. Polythene is use to cover the side of the house and the soil leaving the plants' leafs to have access to sunlight.
Polythene only reduces the amount of water infiltration to the soil while increasing the soil temperature at the same time.
It reduces emergence of weed.

There is no side effects in using it in green house (when used properly)!

1. You can use thick transparent polyethylene sheet for the roof, however, since it is not designed for that purpose it will last only a few months. The UV rays of the sun will quickly damage it.

2. Since you are building a cheap, passive ventilated greenhouse, use mosquito netting for all the sides. You could however, choose to use polyethylene sheet for the bottom 1 foot of the walls.

Finally, use free resources online. Search for examples of cheap, tropical greenhouses. You'll get a lot of good ideas to work with.

Hope this helps.

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menwongo:
Use net for roofing. Plant needs sun light to make their food. Polythene is use to cover the side of the house and the soil leaving the plants' leafs to have access to sunlight.
Polythene only reduces the amount of water infiltration to the soil while increasing the soil temperature at the same time.
It reduces emergence of weed.

There is no side effects in using it in green house (when used properly)!

This is the type of olodo answer that gets people in trouble.
Confidently dishing out false info as if he is a pro on the subject.

Op. You can use normal plastic. The UV light from the sun will discolour it in a few weeks making it less transparent, thereby reducing the light available to the crops. After some months it will start breaking apart due to further UV light damage. At this point, it will become almost useless because rain will be leaking through it and it will not keep insects out.

Atlanticfire:
This is the type of olodo answer that gets people in trouble.
Confidently dishing out false info as if he is a pro on the subject.

Op. You can use normal plastic. The UV light from the sun will discolour it in a few weeks making it less transparent, thereby reducing the light available to the crops. After some months it will start breaking apart due to further UV light damage. At this point, it will become almost useless because rain will be leaking through it and it will not keep insects out.

The worst thing that can happen to human being is to be stupid without knowing!

Menwongo, while AtlanticFire shouldn't have responded to your post with insults, the fact remains that you are wrong to advise the OP to use polythene for his sides and net for his roof. This is the exact opposite of what he should do. Greenhouses control for both water and pests, meaning that the roof has to prevent water ingress while the sides control insect ingress. A structure with insect netting as the roof is not a greenhouse, its a net house and they serve somewhat different purposes. AtlanticFire should have used more diplomatic language to ask you to be careful about the advice you give; ensure that it is based on fact rather than supposition or conjecture.

menwongo:
The worst thing that can happen to human being is to be stupid without knowing!

TinwotFarm1:
Menwongo, while AtlanticFire shouldn't have responded to your post with insults, the fact remains that you are wrong to advise the OP to use polythene for his sides and net for his roof. This is the exact opposite of what he should do. Greenhouses control for both water and pests, meaning that the roof has to prevent water ingress while the sides control insect ingress. A structure with insect netting as the roof is not a greenhouse, its a net house and they serve somewhat different purposes. AtlanticFire should have used more diplomatic language to ask you to be careful about the advice you give; ensure that it is based on fact rather than supposition or conjecture.

Well I got your point bro.
I later find out what we are using in NIFOR is not greenhouse but advance nursery.

For him to say op can use normal plastic for roofing shows he is olodo too!

menwongo:
Well I got your point bro.
I later find out what we are using in NIFOR is not greenhouse but advance nursery.

For him to say op can use normal plastic for roofing shows he is olodo too!

You need to learn the difference between green house and nursing before coming online to blab about green house.

And what is advanced nursery? ? Are you naming a nethouse advanced nursery?

Atlanticfire:
This is the type of olodo answer that gets people in trouble.
Confidently dishing out false info as if he is a pro on the subject.

Op. You can use normal plastic. The UV light from the sun will discolour it in a few weeks making it less transparent, thereby reducing the light available to the crops. After some months it will start breaking apart due to further UV light damage. At this point, it will become almost useless because rain will be leaking through it and it will not keep insects out.

at the bolded,
I was shocked at the nonsense pouring out of that slowpoke's mouth oooo.
Thanks for pointing that out jare

menwongo:
Well I got your point bro.
I later find out what we are using in NIFOR is not greenhouse but advance nursery.

For him to say op can use normal plastic for roofing shows he is olodo too!

stop trying to redeem yourself.
U are an olodo. Yes. Ordinary nylon can be used as long as sun rays can pass through it. Just that it wont Last long cos OF the uv rays

What's the cost of green house cover and where to get it

Al protocol observed. I study accounting n am a huge fan of agric as my field after my service com nxt year. I already started my test experiment in greenhouse thanks to d point of making mosquito net. wit d us of nylon or net as claimed from diff angle wit facts clearly stated. My point.. is butterfly not needed in d house bcus d greenhouse wil b covered altru since we al know d important of does fly in every garden. Plo no insult.

emmybiz:
What's the cost of green house cover and where to get it

Are there no pros to answer this?

Mustack:
Al protocol observed. I study accounting n am a huge fan of agric as my field after my service com nxt year. I already started my test experiment in greenhouse thanks to d point of making mosquito net. wit d us of nylon or net as claimed from diff angle wit facts clearly stated. My point.. is butterfly not needed in d house bcus d greenhouse wil b covered altru since we al know d important of does fly in every garden. Plo no insult.

Also interested in this info. Where are the experts?

menwongo:
Use net for roofing.

Excellent advice. Instead of using poly which can generate heat, net is better during dry season. Cover roof net with poly during rainy season

menwongo:
Plant needs sun light to make their food. [s] Polythene is use to cover the side of the house [/s]

As pointed out, you should do the opposite but I still advise not to use poly during dry season but use net all round.

menwongo:
and the soil leaving the plants' leafs to have access to sunlight.
Polythene only reduces the amount of water infiltration to the soil while [s] increasing the soil temperature at the same time. [/s]
It reduces emergence of weed.

There is no side effects in using it in green house (when used properly)!

It is mulch you are talking about here but you need the kind which will reduce soil temperature and not increase it. I guess you read this on the internet and you just assumed it is the right approach. This kind of mulch is for temperate weather used during winter to warm the soil but you need to cool your soil here. Mulch can heat and also cool soil depending on the kind you use.

emmybiz:
What's the cost of green house cover and where to get it

As pointed out you can use any clear transparent nylon but be sure you can move the temperature inside your structure down to below 30C. Most structures with poly cover on the top climb up to 40C. This is total failure, except you want to use a cooler.

If you still decide to use this option, look out for the thickness of the nylon which is measured in microns. Minimum of 150 microns is what you need. 200 is recommended and 250 to 300 is better. Also, the kind of UV protector it has and how long it will last under 35C is what you should ask your supplier. Again, find cover with anti drip. You know that when nylon is heated, it will have some kind of water under it and you start having droplets of water on your plants. You do not want this as it causes fungi infection. You need one that drips to the sides of the structure so that the droplets of water slide down at the sides without causing any harm. You should check the shade percentage your cover has got, most good covers are 20 to 25%. Is your cover reflective? If yes, it will be more expensive because you get better sunlight. And finaly, is your cover able to filter out light sprectrum of pests? If yes, it will be extremely expensive.

In conclusion, you should get it at $0.2 to about $4 or more per square meter depending on what you buy. The higher the micron, the heavier it is and the more the cost if you choose air cargo for delivery.

You can source for these kinds of covers or nets on most chinese business to business, or business to customers websites like aliexpress, alibaba, 1688 etc. Also, you can check amazon or ebay. I know some guys are beginning to make covers here but I still do not trust such products.

Best of luck!

Mustack:
Al protocol observed. I study accounting n am a huge fan of agric as my field after my service com nxt year. I already started my test experiment in greenhouse thanks to d point of making mosquito net. wit d us of nylon or net as claimed from diff angle wit facts clearly stated. My point.. is butterfly not needed in d house bcus d greenhouse wil b covered altru since we al know d important of does fly in every garden. Plo no insult.

Your question is simply how pollination happens in greenhouses.

1. Grow greenhouse varieties which do not need pollination. They are called parthenocarpic. Google this word and learn more about it.

2. There are ways of turning varieties which need pollination to parthenocarpic. This is advance farming.

3. Stay with self pollinating plants if you do not want to buy expensive parthenocarpic seeds or you do not want do any advance farming. Plant tomatoes and pepper. They just need tapping. Tap your indeterminate plants once or twice a week and you get good pollination. This is why greenhouse workers walk round inside greenhouses and just tapping the plants (they shake the plants). Same with strawberry.

4. Use bumble bees. Can you get any here? I doubt it. Lol

fluentinfor:
As pointed out you can use any clear transparent nylon but be sure you can move the temperature inside your structure down to below 30C. Most structures with poly cover on the top climb up to 40C. This is total failure, except you want to use a cooler.

If you still decide to use this option, look out for the thickness of the nylon which is measured in microns. Minimum of 150 microns is what you need. 200 is recommended and 250 to 300 is better. Also, the kind of UV protector it has and how long it will last under 35C is what you should ask your supplier. Again, find cover with anti drip. You know that when nylon is heated, it will have some kind of water under it and you start having droplets of water on your plants. You do not want this as it causes fungi infection. You need one that drips to the sides of the structure so that the droplets of water slide down at the sides without causing any harm. You should check the shade percentage your cover has got, most good covers are 20 to 25%. Is your cover reflective? If yes, it will be more expensive because you get better sunlight. And finaly, is your cover able to filter out light sprectrum of pests? If yes, it will be extremely expensive.

In conclusion, you should get it at $0.2 to about $4 or more per square meter depending on what you buy. The higher the micron, the heavier it is and the more the cost if you choose air cargo for delivery.

You can source for these kinds of covers or nets on most chinese business to business, or business to customers websites like aliexpress, alibaba, 1688 etc. Also, you can check amazon or ebay. I know some guys are beginning to make covers here but I still do not trust such products.

Best of luck!

You speak so confidently about this greenhouse. Do you offer the service of construction? If yes, please how much will it cost me to have greenhouse of 40ft by 30ft?

opelyem:
You speak so confidently about this greenhouse. Do you offer the service of construction? If yes, please how much will it cost me to have greenhouse of 40ft by 30ft?

Unfortunately, I do not. I import and install only for my business. I do not sell and I do not consult. I just know my contributions here will help many people.

fluentinfor:
Unfortunately, I do not. I import and install only for my business. I do not sell and I do not consult. I just know my contributions here will help many people.

How about giving rough estimates on what it cost to build your own and what capacity and materials were involved.

DeKen:
How about giving rough estimates on what it cost to build your own and what capacity and materials were involved.

Really, this is a tough one. Since I did not just buy the nethouses from a supplier, it made it expensive a bit for just making one greenhouse. I bought nets separately, frame srparately, accesories separately etc. It was not economical to jusy make one unit like thst. I had to make 10 units and I had to dig deep to get fellow farmers who bought so we can share the burden.

I did not have the luxury of having different sizes cos of this reason so we had 500 square meters size. 33 ft × 164ft each. Each was approximately 3.8 million naira. Price depends on forex. Though, i can decide to make it cheaper by using cheaper materials or even make it more expensive by using better qualities. Anyway, what we used are reasonably ok.

It made sense making minimum of 10 instead of one. Making just one, the cost will run over 4.5 million and there will be left over unused materials. Shipping cost is not worth it too for just only one. For me, it is pure waste of resources. I had to convince some farmers. It was a tough one. Next time i am doing it, i will make sure i have the cash for the minimum reasonable units with best price. It is not funny trying to convince people.

fluentinfor:
Unfortunately, I do not. I import and install only for my business. I do not sell and I do not consult. I just know my contributions here will help many people.

okay.
One thing had been discouraging me from practicing greenhouse farming. I am thinking if it yield more profits than the conventional farming. Please can you shed more light on this?

fluentinfor:
Really, this is a tough one. Since I did not just buy the nethouses from a supplier, it made it expensive a bit for just making one greenhouse. I bought nets separately, frame srparately, accesories separately etc. It was not economical to jusy make one unit like thst. I had to make 10 units and I had to dig deep to get fellow farmers who bought so we can share the burden.

I did not have the luxury of having different sizes cos of this reason so we had 500 square meters size. 33 ft × 164ft each. Each was approximately 3.8 million naira. Price depends on forex. Though, i can decide to make it cheaper by using cheaper materials or even make it more expensive by using better qualities. Anyway, what we used are reasonably ok.

It made sense making minimum of 10 instead of one. Making just one, the cost will run over 4.5 million and there will be left over unused materials. Shipping cost is not worth it too for just only one. For me, it is pure waste of resources. I had to convince some farmers. It was a tough one. Next time i am doing it, i will make sure i have the cash for the minimum reasonable units with best price. It is not funny trying to convince people.

Thanks fluentinfor. Your info is still very helpful. At least one has some rough idea. But can't those imported materials be sourced locally?
And more particularly what is the type of material used for the top cover and any idea on what that alone cost per unit? And would you mind adding pics of your finished greenhouse?

DeKen:
Thanks fluentinfor. Your info is still very helpful. At least one has some rough idea. But can't those imported materials be sourced locally?
And more particularly what is the type of material used for the top cover and any idea on what that alone cost per unit? And would you mind adding pics of your finished greenhouse?

If I could get what i needed in Nigeria, i would not import. Have you heard that someone closed his tomato paste industry in Nigeria and went to set up in China to start importing to Nigeria? I do not understand why you think sourcing locally will be cheaper. I am even going to buy from people who bought them there and are reselling which will make it more expensive and inferior. What exactly do we produce in Nigeria?

Farmers who keep sourcing locally or in the habit of improvising are still not ready for business. They will keep struggling and they may never make it. I have seen them many times. They end up saging Agriculture is waste of time. They come online askimg for government bail out and incentives. They move from one business to another. Today it is pig, tomorrow cassava and next tomorrow cucumber. And they aren't making profits.

Even they try to substitute pvc pipes for drip. I do not understsnd such act.

Bro, i am not saying you are like that but I am just writing what is common among farmers.

It will be too much stress on me to write about materials here. Please check https://www.nairaland.com/4148771/in-depth-practical-knowledge-aquaponics

Pictures? I am.not that kind of person who posts pictures of our projects online like that for security reasons. And since I do not have the intention of selling anything to anyone, I do not feel compeled to do so..The structures are normal high tunnels which are here in this forum. Pictures cannot show difference in quality. So, i am sorry about that.

fluentinfor:
If I could get what i needed in Nigeria, i would not import. Have you heard that someone closed his tomato paste industry in Nigeria and went to set up in China to start importing to Nigeria? I do not understand why you think sourcing locally will be cheaper. I am even going to buy from people who bought them there and are reselling which will make it more expensive and inferior. What exactly do we produce in Nigeria?

Farmers who keep sourcing locally or in the habit of improvising are still not ready for business. They will keep struggling and they may never make it. I have seen them many times. They end up saging Agriculture is waste of time. They come online askimg for government bail out and incentives. They move from one business to another. Today it is pig, tomorrow cassava and next tomorrow cucumber. And they aren't making profits.

Even they try to substitute pvc pipes for drip. I do not understsnd such act.

Bro, i am not saying you are like that but I am just writing what is common among farmers.

It will be too much stress on me to write about materials here. Please check https://www.nairaland.com/4148771/in-depth-practical-knowledge-aquaponics

Pictures? I am.not that kind of person who posts pictures of our projects online like that for security reasons. And since I do not have the intention of selling anything to anyone, I do not feel compeled to do so..The structures are normal high tunnels which are here in this forum. Pictures cannot show difference in quality. So, i am sorry about that.

Thanks very much for your insights and your time. I have been enlightened.

fluentinfor:
As pointed out you can use any clear transparent nylon but be sure you can move the temperature inside your structure down to below 30C. Most structures with poly cover on the top climb up to 40C. This is total failure, except you want to use a cooler.

Best of luck!

So how do you control your temperature to maintain temperature of below 30C in your greenhouse do you make use of any mechanical means.

domack99:
So how do you control your temperature to maintain temperature of below 30C in your greenhouse do you make use of any mechanical means.

Moving temperature to 30C might be tough. It depends on the outside temperature. So, the first is to reduce the direct impact of sun. Shade nets from 30% - 70% are used. You choose which percentsge based on how high heat is. Also, one needs to consider the kind of crops. Do you notice that vegetable farmers always use leaves as shade for very young tomato, pepper, or lettuce plants in the nursery?

Since it is a covered production, increase ventilation. Make sure you have free air flow. I do not use poly cover at the top cos it increases heat. Better to just use net all round and find a way to cover it during rainy sesson. If it rains like 3 times or 4 times in a month, it is fine. It will not kill your plants if rain enters your structure. It is during rainy season you should be concerned.

The secret is going for varieties which can resist heat. So, that if you still record 32C, you are ok. I do not make public rcommendation because I do not want to promote any producer or seller.

Another equipment is misting and fogging. The only disadvantage is that it promotes fungi infection but it has been used very well.

And finally cooling pad and exhaust fan can be used. I do not advise this except sales is very high. You might need solar energy or biogas system to power this. And your cover might not be all round net. I have seen greenhouses with such system whereby the fans became decoration in the nethouses because owners cannot afford to buy fuel to power them.

fluentinfor:
Moving temperature to 30C might be tough. It depends on the outside temperature. So, the first is to reduce the direct impact of sun. Shade nets from 30% - 70% are used. You choose which percentsge based on how high heat is. Also, one needs to consider the kind of crops. Do you notice that vegetable farmers always use leaves as shade for very young tomato, pepper, or lettuce plants in the nursery?

Since it is a covered production, increase ventilation. Make sure you have free air flow. I do not use poly cover at the top cos it increases heat. Better to just use net all round and find a way to cover it during rainy sesson. If it rains like 3 times or 4 times in a month, it is fine. It will not kill your plants if rain enters your structure. It is during rainy season you should be concerned.

The secret is going for varieties which can resist heat. So, that if you still record 32C, you are ok. I do not make public rcommendation because I do not want to promote any producer or seller.

Another equipment is misting and fogging. The only disadvantage is that it promotes fungi infection but it has been used very well.

And finally cooling pad and exhaust fan can be used. I do not advise this except sales is very high. You might need solar energy or biogas system to power this. And your cover might not be all round net. I have seen greenhouses with such system whereby the fans became decoration in the nethouses because owners cannot afford to buy fuel to power them.

I almost venture into tomato using greenhouse early 2016

Went round to see some established greenhouses both improvised and standard package greenhouse structures. I will call a lot of them a fail project (mostly govt initiated) and few are struggling.

Going through lots of articles on line and YouTube videos, one question keep crossing my mind "is greenhouse actually needed in most part of Nigeria"

domack99:
I almost venture into tomato using greenhouse early 2016

Went round to see some established greenhouses both improvised and standard package greenhouse structures. I will call a lot of them a fail project (mostly govt initiated) and few are struggling.

Going through lots of articles on line and YouTube videos, one question keep crossing my mind "is greenhouse actually needed in most part of Nigeria"

You are right. They are failed projects. Why? Those who did them only imported systems available. And which systems are available? Systems for those who first used them. And who first used them? North Americans, Europeans, and south American. And what do you notice about these places? They are with temperate climatic condition. So, how do you expect a system meant for a temperate place to work in a tropical place. The structures you see around are ovens. Some recorded inside temp of 45C. How do you expect any plant to survive that kind of high temperature. I mean, outside is 36C, inside is 45C. Their structures made their situation worse. Such a pity.

Of course, if you have to install a greenhouse, it must reduce temperature. 3C reduction is huge and will make difference. Having this at the back of your mind, you will have a successful structure.

The next step is to cut down energy consumption. This is where you need to be very careful. When you check your climatic condition and the varieties of seeds you can get, you can know what to grow. Maybe 33C is what you can get with zero energy consumption and you do not want to still consume energy, you just have to look for a variety which can survive it.

If our research institutes are efficient, we will have many varieties for our environment but since they are inefficient and our glorified scientists are just paper professors, Nigerian farmers import seeds. Tell me which hybrid seed is not imported. Can you mention just one? So, Nigerian farmers buy seeds made for another climatic condition and they try to fine tune them to our tropical environment. Farmers are getting smart. They do not look for seeds sold in Russia, USA, Canada, etc because they are all temperate countries. One funny thing about USA is the country will always remain relevant cos there are many tropical places there. Florida and Hawaii are tropical places. So, you start looking at the seeds there. Again, there are many tropical Asian countries and it is why seeds from Thailand, Malaysia, India etc are getting popular here.

But what is wrong with Nigeria? These countries used to come to Nigeria in the 80s to buy seeds when our educational system was still intact. It means that the Nigerian people are smart but the Nigerian system is terrible. Those who bastardized Nigeria are still holding power. So, these set of people will always be interested in embezzling and it is why they buy just any kind of greenhouse that will make them more money.

It is only you who can help yourself very well in this Nigeria. Make research. It is smart of you to check those structures. What you should have done further is to find out why they all failed but this is your lucky day as I have giving you the answer. The next step is to find solution.

I know farmers with wooden structures who have excellent greenhouse structures. Those farmers will not shout or advertise themselves. Why will you advertise yourself when you have a working system which gives you steady income? How much will you make from consultancy? Real farmers who are making money will not consult for individuals. How much will an individual pay? Except the farmer decides to render asssitance. And then, it is getting more difficult to assist people in this country. Well, as for me, I decided to render my service by writing on public forums like this. Those who can have patience to read long posts and can think deeply will definitely benefit tremendously and can even do better things.

Of course greenhouse works in Nigeria.

fluentinfor:
You are right. They are failed projects. Why? Those who did them only imported systems available. And which systems are available? Systems for those who first used them. And who first used them? North Americans, Europeans, and south American. And what do you notice about these places? They are with temperate climatic condition. So, how do you expect a system meant for a temperate place to work in a tropical place. The structures you see around are ovens. Some recorded inside temp of 45C. How do you expect any plant to survive that kind of high temperature. I mean, outside is 36C, inside is 45C. Their structures made their situation worse. Such a pity.

Of course, if you have to install a greenhouse, it must reduce temperature. 3C reduction is huge and will make difference. Having this at the back of your mind, you will have a successful structure.

The next step is to cut down energy consumption. This is where you need to be very careful. When you check your climatic condition and the varieties of seeds you can get, you can know what to grow. Maybe 33C is what you can get with zero energy consumption and you do not want to still consume energy, you just have to look for a variety which can survive it.

If our research institutes are efficient, we will have many varieties for our environment but since they are inefficient and our glorified scientists are just paper professors, Nigerian farmers import seeds. Tell me which hybrid seed is not imported. Can you mention just one? So, Nigerian farmers buy seeds made for another climatic condition and they try to fine tune them to our tropical environment. Farmers are getting smart. They do not look for seeds sold in Russia, USA, Canada, etc because they are all temperate countries. One funny thing about USA is the country will always remain relevant cos there are many tropical places there. Florida and Hawaii are tropical places. So, you start looking at the seeds there. Again, there are many tropical Asian countries and it is why seeds from Thailand, Malaysia, India etc are getting popular here.

But what is wrong with Nigeria? These countries used to come to Nigeria in the 80s to buy seeds when our educational system was still intact. It means that the Nigerian people are smart but the Nigerian system is terrible. Those who bastardized Nigeria are still holding power. So, these set of people will always be interested in embezzling and it is why they buy just any kind of greenhouse that will make them more money.

It is only you who can help yourself very well in this Nigeria. Make research. It is smart of you to check those structures. What you should have done further is to find out why they all failed but this is your lucky day as I have giving you the answer. The next step is to find solution.

I know farmers with wooden structures who have excellent greenhouse structures. Those farmers will not shout or advertise themselves. Why will you advertise yourself when you have a working system which gives you steady income? How much will you make from consultancy? Real farmers who are making money will not consult for individuals. How much will an individual pay? Except the farmer decides to render asssitance. And then, it is getting more difficult to assist people in this country. Well, as for me, I decided to render my service by writing on public forums like this. Those who can have patience to read long posts and can think deeply will definitely benefit tremendously and can even do better things.

Of course greenhouse works in Nigeria.

You are perfectly right with this write up, some of the factors you mentioned are what i believe is the poor performance of the greenhouses in Nigeria, since i didn't put it into practice i never confirmed my suspicion.

I also thought of putting up an exhaust ventilation system to regulate the temperature, then cost of production becomes an issue, except you are able to ensure your produce are sold at premium price. I personally don't like business where selling the product at premium price only guarantee profitability.

Another factors i believe is the poor research by farmers and the so called farm managers, they buy product from these OEM and never get close to the expected result and yet no one is asking question on the suitability of the system employed

I eventually invest in medium cash crop, this you write up has given me hope in vegetable production, hopefully will be looking into it again early next year.

domack99:
You are perfectly right with this write up, some of the factors you mentioned are what i believe is the poor performance of the greenhouses in Nigeria, since i didn't put it into practice i never confirmed my suspicion.

I also thought of putting up an exhaust ventilation system to regulate the temperature, then cost of production becomes an issue, except you are able to ensure your produce are sold at premium price. I personally don't like business where selling the product at premium price only guarantee profitability.

Another factors i believe is the poor research by farmers and the so called farm managers, they buy product from these OEM and never get close to the expected result and yet no one is asking question on the suitability of the system employed

I eventually invest in medium cash crop, this you write up has given me hope in vegetable production, hopefully will be looking into it again early next year.

I am highly embarrased that you do not know vegetable production is highly profitable. What? This is the fatest agricultural area which will make you a millionaire. However, it can wreck you too and it has destroyed many people because they did not set up properly. You may struggle at the initial stage but if you get quality assets, you will eventually get balanced. And after, the sky is just the beginning.The main challenge in vegetable production is getting reliable farm workers but there are solutions. I can count my losses too but I gain more everytime by God's grace. Another challenge is logistics.

Do you not realise till date that food is extremely cheap in Nigeria? Do you think you can get tomato in most countries as cheap as you get them in Nigeria during certain period? Who use tomato to make stew daily? Who eat only red spup or stew? Of course Nigerians because it is extremely cheap. It may be the reason you call greenhouse products premium. Well, the truth is there are still expensive vegetables even in open market and those are the ones you need to target. Example is capsicum. You can still do it in greenhouse and make reasonable profit if you sell where tomatoes are sold if you do not want to go to grocery stores. Again, if you can put vertical structure in your greenhouse, you will make reasonable profit selling lettuce and cabbage to special vegetable market for average Nigerians. People still eat lettuce and cabbage here. If you can reduce the temperature in your greenhouse and you see that the cost of energy is not killing, green pea or green beans will give you profit if you sell in open market. I can go on and on. If it has to be tomato, you just make sure it is beefstake variety you plant so you make profit. Any other variety, you might struggle. Yes, you may plant plum tomato too but you might have to look for somewhere nice to sell it.

Lastly, with this Keto diet for people who want to reduce weight, mint is an excellent vertical production you can consider.