Seasonal Needle Drop (Horticulture/Urban IPM)
Description:

Fall - we associate this time of year with an array of vibrant colors on our deciduous trees. However, the yellowing of evergreen trees might cause some concern. Every fall, the inner needles of evergreens start to turn yellow and are dropped over time. This is a natural process known as seasonal needle drop. Please see more information in the attached alert document.

Sincerely,

Eva Grimme


Alert Period: 09/28/2020 - 11/28/2020
Submitted By: Eva Grimme
Alert Documents:
Root weevils_statewide (Horticulture/Urban IPM)
Description:

Montana has several home-invading weevils that come into our homes starting in April and
through November. They are harmless to humans and structures.


Alert Period: 05/01/2020 - 11/30/2020
Submitted By: Lauren Kerzicnik
Alert Documents:
Asian giant hornet, Vespa mandarinia (Horticulture/Urban IPM)
Description:

There has been a lot of press about the Asian giant hornet, Vespa mandarinia, aka the murder hornet. It is not known to be in Montana at this time. Two sightings have been confirmed in Whatcom County, Washington in Dec 2019 and in British Columbia in the fall of 2019. See this fact sheet/alert from Alyssa Piccolomini from the Montana Department of Agriculture.


Alert Period: 05/07/2020 - 12/01/2020
Submitted By: Lauren Kerzicnik
Alert Documents: