Drum/barrel growing rocks...I drill the bottoms with a 3/8" bit, full of holes and do as Yoshi described......line the bottom with screen or cloth and keep the slugs and all out, pea gravel gives good drainage, compost and top soil, subs of all kinds.....lids made of screen can be attached over them and also covered with a burlap bag and drip irrigated too....
They're perfect for controlled outdoor cultivation and testing.....I'm hoping my hens fruit again this fall....glad to see others try it.....
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