About the Terra Sorb Medium: Non-toxic, non-hazardous to the environment, and compatible with fertilizer and other "green" industry chemicals. Horticultural grade, medium, for planting, seeding, sod, flower beds, and potting mixes.
About the Ross Fertilizer Stakes - trees: Ross specially packs stakes in a big 40-Pak box. One application usually lasts all year. A 15-7-6 formula specifically for mature trees and shrubs.