Urban farming is widely adopted in most countries, this approach will not only help ensure food security but will help attract youths to invest in farming and other agricultural related businesses.

Here is a link of a short video on how to construct a low cost greenhouse and bed preparation for planting.

Low cost greenhouse farming - https://www.youtube.com/Vy72pRX6hJw
Source: aircvideounit

For more reading on Urban Agriculture case studies visit http://www.africanagroportal.com/2016/10/case-study-urban-agriculture-findings.html