| g'day tree_man, mmm never heard of the stuff ever?? would not expect something laid just under the turf to affect tree roots though? but then we just dunno hey? as for the tree not performing that could be more to do with the medium where the tree is planted, all from preperation of the hole and what has happened since, could also mean your tulipwood may have been a pot bound root ball, you would know that better? what am saying there are lots of variables. would be suspicious of an industrial bi-product being promoted to gardeners could be a way for them to dispose of some nasties like they do in that composted mulch from the tips. might help if you get a ph test done around the tree dig down about 6+"s to get your sample, if you don't have a test kit any good nursery should do it free. len |
Here is a link that might be useful: lens garden page