Lightweight Soil for a Planted Roof
Does anyone here have a planted roof? I'd love to see some photos and get any advice possible. Most of the roofs on Google are a lot different than what this will be. It's being built to carry more weight than it will ever have. It will be on top of a potting shed and will be about 12'x7'. It won't be very steep. maybe an inch or two drop per foot. The drop will be in the 7' direction.
I'm looking for a lightweight soil recipe, The depth isn't decided, but am thinking 4 inches or so. It will be planted with sedums and other succulents, and possibly a few annuals thrown in to see how they do. I use soil very close to Al's recipes in containers and it's worked out very well (Thanks again Al!!). I have easy access to bulk perlite, pumice and bark that's just the right size, with just a tiny bit of waste. Even though there are large rock quarries in the area, I haven't found the gravel in bulk, so buy it in bags. Thanks, Linda