The green roofs will be, yes, hen & chicks, but a bunch of other succulents that we already have growing in the front yard and pots, herbs, and we are planning on doing a crop of lettuce & spinach when the weather cools a bit. We just got the inside of the coop done today with the nesting boxes & roost, plus a fan, so next weekend it is planting time. We've got a bunch of compost ready to go, some peat moss and we'll buy some potting soil to get it started. We just need to lay down pool liner for protecting the wood and finish the drainage. My biggest concern is the chickens jumping up there and eating it all like they are doing in my strawberry & tomato beds!