Herbicide Carryover in Garden Amendments (Horticulture/Urban IPM)
Description:

The Schutter Diagnostic Lab is receiving garden vegetable samples showing symptoms consistent with synthetic auxin, also known as plant growth regulator, herbicide injury. In many of these cases, we suspect carryover of persistent herbicides in garden amendments such as compost, manure, or topsoil. See the attached document for more information. 


Alert Period: 06/26/2019 - 10/31/2019
Submitted By: Lesley Orloff
Alert Documents:
Lichens in the urban landscape (Horticulture/Urban IPM)
Description:

The Schutter Diagnostic Lab has received multiple samples and questions concerning lichens growing on the branches of various trees. Lichens are composed of fungi and algae or cyanobacteria that form a mutualistic relationship. Lichens are not pathogenic and do no harm the substrates they are found on. Please open the attached PDF file for more information.

Please contact the Schutter Diagnostic Lab (diagnostics@montana.edu or 406-994-5150) for questions.

Sincerely, Eva Grimme


Alert Period: 06/25/2019 - 08/31/2019
Submitted By: Eva Grimme
Alert Documents:
Poplar borer_statewide (Horticulture/Urban IPM)
Description:

This spring, we have had many emails and calls about possible poplar borer damage on aspens, poplars, and cottonwoods throughout the state.


Alert Period: 06/13/2019 - 08/30/2019
Submitted By: Lauren Kerzicnik
Alert Documents:
Winter damage on deciduous trees and shrubs (Horticulture/Urban IPM)
Description:

With our severe temperature fluctions in April, many deciduous trees and shrubs had their buds damaged and appear to be dead. Deciduous trees should be given time to struggle through and recover. Many have secondary buds that are formed for just such an event, and may yet leaf out. Use a thumbnail to shallowly scrape into the cambium of the branch - if it is green, the branch is alive and needs to be given time to recover. Another test is the suppleness of the branch. Traditionally we recommend folks give their trees until at least the 4th of July to recover from such a winter, and sometimes even longer if the branches still appear to be alive. 


Alert Period: 05/30/2019 - 08/30/2019
Submitted By: Cheryl Moore-Gough
Home-invading weevils_statewide (Horticulture/Urban IPM)
Description:

Montana has several home-invading weevils that come into our homes starting in April and all the way through November. They are harmless to humans, are not wood-boring beetles, and are mostly just a nuisance in homes. These invasions are only temporary.


Alert Period: 05/20/2019 - 11/29/2019
Submitted By: Lauren Kerzicnik
Alert Documents:
It is tick season (Horticulture/Urban IPM)
Description:

It is tick season in Montana. The common ticks in Montana this time of the year are the Rocky Mountain wood tick, Dermacentor andersoni and the American dog tick, Dermacentor variabilis.


Alert Period: 05/03/2019 - 09/30/2019
Submitted By: Lauren Kerzicnik
Alert Documents: