Got to visit John Zapf’s vertiginous LA compound yesterday. He’s got an amazing rooftop vegetable garden using self irrigating pots. John has little sun in the yard so the roof is only option for veggies.
He uses drip line to refill the reservoirs. Reminds me of the Green Roof Growers of Chicago (minus the extreme weather).
His two cents on what to grow: chard good, zucchini good, corn in pots not so good.
For more info on self irrigating pots on Root Simple click on the label for this post below.