Deep root fertilizer injection

Asked May 13, 2019, 1:55 PM EDT

What soluble fertilizer is recommended for injecting into the root zones of trees and shrubs? i’m An individual and would appreciate names and sources of material. Thanks

Ingham County Michigan

1 Response

The best guideline for determining what fertilizer to use for your trees and shrubs would be based on the results of a soil test. Using fertilizer with slow release nitrogen is a good idea.It should be applied either in spring or in fall after next year's buds have set. Dr. Bert Cregg provides some guidelines, suggested rates and nutrient sources for fertilizing trees and shrubs at this link: