| I would like to try growing a perennial that I saw frequently while hiking in Patagonia, Ourisia poeppigii:
http://www.chileflora.com/Florachilena/FloraEnglish/HighResPages/EH0207.htm
The plant needs constant wet conditions, so it is commonly found growing in rock crevices alongside waterfalls or rushing streams. I have a short wall in my yard with the right lighting conditions, and it occurred to me to try starting this on the wall in some kind of water-holding substrate. I'm envisioning something like a peat mat which could be fastened to the wall to serve as a growth media. Being Seattle, this area is plenty damp most of the year and I already have drip irrigation to assist over the summer.
Has anyone else tried this type of setup in a rock garden? Does it work?
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