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Weed killer compatible with Douglas Fir trees #823684

Asked March 28, 2023, 9:12 AM EDT

A patron called and would like to know what kind of weed/grass killer he can use that would be safe for use around his Douglas Fir trees. Please advise. Thank you.

Alcona County Michigan

Expert Response

Hello,

Please follow these directions:

1. Go to Extension Bulletin E3237 • Updated • May 2018 - Weed Control in Christmas Trees at this link:
https://www.canr.msu.edu/christmas_trees/uploads/files/e3237%20wcag%202.0.pdf

1. Look at Table 3 - Preemergence weed control in seedbeds, recently transplanted seedlings and first-year Christmas trees; Table 4 - Postemergence weed control in seedbeds, recent transplants and first-year Christmas trees; Table 5 - Preemergence weed control in established Christmas trees; Table 6 - Postemergence weed control in established Christmas trees - These tables are on Pages 5 through 11. The Tree Species on label column that have Douglas - fir means that herbicide can be used around Douglas fir - I STRONGLY SUGGEST YOU READ EACH TABLE CAREFULLY FOR YOUR CHOICE OF HERBICIDE - ALSO, WHEN YOU GET THE HERBICIDE READ & FOLLOW DIRECTIONS ON THE LABEL - IT'S THE LAW

2. READ PAGES 1 & 2 ON Preemergence and postemergence herbicides - THIS IS INFORMATION YOU NEED TO KNOW

Hope this helps
An Ask Extension Expert Replied March 28, 2023, 11:50 AM EDT

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