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.
However, some of the Miracle-Gro product labels recommend lightly watering the area after application and keeping your dog off the area until it dries to prevent the fertilizer from being transferred to other areas. Read the product label or contact Scotts to obtain a Material Data Safety Sheet before use.