Hello team. I can't even remember what these are called, who makes them or were I got them... They are used to suppress weeds and direct dew and rain water to newly planted trees and shrubs. I used them about 6 years ago to start a bunch of fruit and nut trees. The good news is they do indeed suppress weeds/grass and direct water right to the new tree. The bad news is they attract rodents. They seam to make a perfect environment for mice.
Anyway I have about 50 of them and they are free for the taking. I live West of Portland, OR and I'd gladly give them to a Permie who can use them. See pictures below.
It's been a while since I've been to Permies... if there is a better place to post this or I have broken a rule of some sort please advise.