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Marianne writes

How much Atrimmec Plant Growth Regulator would I need to treat two trees?

I have a 15 yr. old cherry tree, and a 10 yr. old Sweet Bay Magnolia. Also, does this work on boxberry and crimson barberry? Are the directions on the label?


You will use 1-3 ounces of Atrimmec Plant Growth Regulator per gallon of water for most foliar sprays for growth control. Small trees up to 16 feet require 1-5 gallons per tree, and larger trees 20-30 feet require 10-15 gallons of solution per tree. Thorough coverage provides best results. Both cherry laurel and barberry are listed with rates on the product label. We are not sure this product would be effective on the magnolia or boxberry since those species have not been tested or shown to be affected per the product label. Be sure to read the entire label before using this product.

Answer last updated on: 12/19/2017

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