I am on vacation and just went to Kew Gardens. Loved the palm house, and am toying with getting rid of the pots in my greenhouse,
Because of massive maple tree roots under the greenhouse, I can't even dig down a few inches. But I'm thinking of very large raised beds, maybe 15" high, and letting the trees in the greenhouse dig down into native soil and wiggle trhough the maple roots.
Any ideas for thin, sturdy raised bed walls? 4" wide cinderblocks and anchor them? Wood that won't rot or poison my plants? Thin poured concrete walls?
Hmmm...
Carolyn