Definition of undergrowth for Students. : low growth on the floor of a forest that includes shrubs, herbs, and saplings.
From Organic Gardening Magazine, July/August 2000 Issue. Miracle-Gro is a synthetic fertilizer that contains ammonium phosphate and several other chemicals that can be toxic to your soil and plants. It is prohibited from use in certified-organic farming.
Miracle-Gro and Pet Safety. Miracle-Gro fertilizers are safe for dogs, and dogs can re-enter treated areas immediately after application. The Food and Drug Administration states the ingredients in these products are considered safe and are present in other nontoxic products you use in your home.