Re:What vertical farming and ag startups don't understand ab...
by primroot on Thursday June 25, 2020 @07:46PM
(#23647110)
That's right. I've seen purselane thriving along with other weeds away from any concrete, growing taller and with bigger leaves during the first month of rains. A week later someone comes with a machete, and that's the end of it. I do think however that most edible weeds require some sort of disturbance that human presence tends to bring.
Furthermore, there are several techniques to help trap moisture that does not require a concrete lid. I'm in the Phnoenix desert, and I use the trimmings from my zucchinni plant as green mulch. Along with the palm fronds that my neighbors love to trim, they create very effective moisture traps. I need to trim my zucchinnis anyways for their optimal health.
I could also plant things in a way to take advantage of the vertical spaces as well. Okra, for example, thrives in the low desert, and provides dense shade that already traps moisture. If I add something that likes shade, and stays closer to the ground, that forms a kind of living mulch that does not require a lot of ongoing maintenance. And if I plant pole beans to take advantage of the sturdy okra stalks, they fix nitrogen and help keep the soil fertile.
I didn't come up with these ideas. They may not be widely known, but people have come up with these design patterns and used them well.