container garden on concrete

bosewichte(7a/8b)March 14, 2012

A few years ago, my husband built three 4 feet by 4 feet container garden enclosures on a concrete slab in our back yard. They have a depth of about a foot.

Normally I plant shallow-rooted annuals in there, but I'd love to make it a vegetable garden this year. I'm thinking peas, radishes, lettuce, peppers. Is a soil depth of a foot enough to support their root systems?

If not...any veggie recommendations that would work?

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calistoga_al ca 15 usda 9

What you are thinking of should work fine. Al

    Bookmark   March 15, 2012 at 9:04AM
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bosewichte(7a/8b)

Great, thank you!

    Bookmark   March 15, 2012 at 9:42PM
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kristimama

We did basically the same thing in our yard (wooden boxes with plywood bottoms, on rollers so they can move around the concrete easily). I found that 1 foot worked fine for beans and peas, lettuce, chard, kale, radishes, short baby carrots. Zucchini didn't work *great* in this depth, but a container variety of zucchini might work (I saw some at Territorial Seed and Swallowtail nursery this year). Smaller pepper varieties will probably work fine. The taller peppers might need a tomato cage for stability. Anything with longer more demanding roots, tomatoes in particular, needed at least 20" of soil So we just built up a couple of our boxes to be deeper for tomatoes. We keep one of our beds shallow and use it for beans and lettuce.

Good luck.

-kmama

    Bookmark   March 18, 2012 at 12:34PM
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