Marketing; marketing; marketing!

That's the biggest challenge: where will you sell what you harvest and to whom?

@Veteran I am not sure if its still running because I ended up moving to a different state at the end of the academic year. Let me know when you get the pictures.

In my experience, when you are starting out, its hard. Once you establish yourself in the business you get very regular orders, and that is very sustainable. If you get good produce with good quality, market is never a problem. You may have to hussle for it, but the market is there.

I have never had tomatoes go bad because of lack of market. At times I have had to be innovative, to be able to sell them. Beauty with tomatoes (and possibly onions) is that everybody uses them. From the very high end market (those who shop in Zuchinni, supermarkets, e.t.c.) to those in slums.
And each of those markets have their own specifications, e.g. if you take to Kibera - they want small tomatoes. Zuchinni will only buy the Super huge tomatoes.

I did an experiment with coloured peppers that failed miserably.

@mkimwa

very good info, how big is your land I have a quarter acre somewhere in Kitengela and I am thinking of either greenhouse or zero grazing.