Bad idea. You should dig the hole at least twice as wide as the roots but no deeper. Loosening the soil under the root ball will eventually lead to settling and sinking putting your tree or shrub at risk of crown or root rot.
Bad idea. You should dig the hole at least twice as wide as the roots but no deeper. Loosening the soil under the root ball will eventually lead to settling and sinking putting your tree or shrub at risk of crown or root rot.