Show pennsylvania expert earth mound damage young mica mica mice seen young sod where manure mulch came around precautionary measure professor paddock ohio college agriculture around six inch mound earth thrown plan earth certain extent against winter injury want go extreme however off young tree root experiment shown certain amount organic soil often protect injury during bard bard hard winter always present always against ways tree protect form tree protector either cylinder fine mice during wintertime great winter particular field mice snow FOH TREES part woven wire wood veneer cloth cloth clog |