- Author: Igor Lacan
- Author: Cheryl A. Wilen
- Author: John A Roncoroni
Published on: June 5, 2017
[From the May 2017 issue of the UC IPM Green Bulletin]
It's among every landscape professional's worst nightmares: returning to a landscape recently treated with an herbicide to find previously healthy trees looking “strange.” These strange findings could be leaves with bleached-out veins, twisted shoots, dying twigs, or stunted new growth appearing in unusual places.
This nightmare situation occurred several years ago on coniferous trees in many Midwestern landscapes where a presumably “safe” herbicide labeled for use...
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