Can I grow lettuce or anything__maybe herbs in cement blocks

Delhi, IA

I just put out a 4 by 8 cement block bed, filled it with a layer of oak leaves, sheep manure and the top half with compost. Planted onions down the middle, then spinach on one side. When the spinach comes out I want pole beans along that side. Have half left to plant. Maybe a few beets and carrots.

My question is can I fill the holes in the blocks with compost and grow mini head lettuce in them? Anyone ever try this? How did it work? I've got the plants ready with about 5 leaves ready to grow somewhere. Just wondering if it will work?

Charlotte, NC(Zone 7b)

jamlover - I've never tried this, but I either read, or saw in TV that concrete blocks can leach something-or-other (sorry; evidentally I wasn't paying too much attention at the time) - I think is was either lime or calcium - which changes the pH of the soil and makes it inhospitable to growing plants in the "holes." However, I also seem to remember them saying that after several years, this is no longer a problem. Not much help was I (giggle)

Elmira, NY(Zone 6a)

I grew marigolds in the holes in cement blocks. Just filled the holes with potting soil and put the seeds in and voila. They grew fine. It would be worth a try with the lettuce.

Reno, NV

I've planted flowers in those holes before and they've done well. Can't remember what it was, but related to onion.

Delhi, IA

Thanks everyone. Think I will try it.

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