Bungalow Bill wrote:

I want to make growing benches out of concrete and cinder blocks.


Bill - You might want to look into what's called "hypertufa", a mix of
perlite, concrete, and peat moss. It can be textured and molded into
whatever shape you like. to use for shelves, you'll likely need some
reinforcing material (fiberglass mesh or wire screen). you can find
recipes and instructions all over the Web. here's a favorite site of mine:

http://www.taunton.com/finegardening/pages/g00117.asp

Or, make life easy on yourself as Nina suggested, and use
vinyl-covered wire shelving. Double them up (offsetting by a little)
if your tres are large, or put the support shelves closer together.

Wondering, wouldn't outdoor-treated lumber, especially if coated with
a semi-transparent stain/sealer, last well enough even in your moist
climate??

Regards,
Anita
Northern Harford County, Maryland, USDA zone 6
"I like winter trees against the sky, I said.
What does that say about you, she said, that you like
undressed trees. A voyeur."
-from a poem by Kay Cheever

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