[Community_garden] Table Gardening

[yarrow at sfo.com]

At 2:17 PM -0400 6/24/07, Lisa Dufresne wrote:
....Can you make forms using that cement/peat mix they
>use to make lightweight "fake" concrete planters? I once had a book with the
>recipe for the material. This would make a nice lightweight planter box and
>it would be easy to drill drainage holes in them too (or work these holes
>into the "form" you use).

Hypertufa. Last time I looked, recipes were all over the internet 
(all a bit different, of course). The botanical garden at Tilden Park 
in Berkeley has had several of these for years.

Hypertufa weighs less than concrete, but as I understand it, you do 
still need to make forms (even if they are free-form forms), and if 
you make large planters they can weigh a lot. Has anyone used this 
material to make big planters for vegetables? If you've used 
hypertufa, have you found a practical limit to the size?