ok guys i know your going to think i am crazy on this one but here it goes anyway . soil compaction around trees are bad . we know that the roots need oxygen and need to respire . i suggest you go to your local bait shop and buy several dozen of nightcrawlers . these guys are our workers rototilling and turning over the soil . they consume decay and organic waste material processing everything into plant food . after a heavy rain or real early in the mourning i can see all of there worm holes . they really help the soil for drainage by keeping it not so compacted and from becoming more compact . they work great in mulch beds as they will break down decaying mulch making it better for the soil ( no nitrogen deficiencies to worry about from mulch ). they will reproduce and the birds do not mind at all . in early times farmers use this method with great success for there crop fields . since they are turning over and helping to aerate the soil more , they will help all the aerobic micro fauna living in the soil creating a more healthly substrate for our plants and trees . i have seen these crawlers help in hard clay soils to . to get these guys to go down into hard soils just saturate the soil so it softens up and put them there and they will have a easier time getting down in the ground . there are many benefits to these worms . am i crazy ?