Iiving stakes are listed by numerous companies on the lnternet. One company list 39 species.Such things as sweet bay , ,sycamore, willows ,red dog wood, sassafras. button bush, cotton wood ,elderberry ,vibernum. If the success rate is only 10% that would make them expensive but if I take them off of my plants I could cover a large area'along streams ,around ponds ,improving habit at very low cost.