I have only one successful seedling thus far - a common JI from some eBay Japanese seeds, but I think I have a plan that will make culling easy in the future. We have a great hill of poison ivy off the edge of the local cemetery. It is loaded with daffodils from all the spent planters chucked over the edge. No one digs anything there. What a lovely place to practice pitch rhizomes that have "bad foliage."