This one’s in my own garden. It’s a small lean-to type, built on the side of a larger shed. The photo’s a bit old, mainly because I’m not going out there right now, but it’s still going strong and is around ten years old.
Construction was off a frame of 3” and 4” posts, and the roof is laid on slightly curved plywood (for extra strength, although it would probably have been ok anyway). ‘Soil’ (50% compost, 50% vermiculite) depth is about four inches, and it all drains into the pot on the stand at left, which is connected to a pipe running under the patio and across to an IBC container on the other side of the garden.
The water from the larger shed roof drains onto this one, which is important - it gets about 2.5 times the water it would get otherwise.
I threw some grass seed up at the start, but have never touched it since. It *might* get watered a couple of times in the summer (although not this year), whatever grows is left alone and I don’t clear it - the elder leaves drop on it as well. It’s never been fed otherwise.
No complicated layers - just plastic sheet in a bathtub arrangement, growing medium and plants. So long as it slopes and the water has an exit, that’s all you need!
#Gardening
#GreenRoof
#SolarPunk
