July 1, 2024
Come visit us at our new location at 1075 South Ave W on the Missoula Fairgrounds.
This calendar is an ever-expanding database on information about life cycle events for common Missoula County plants, pests, and diseases. Below, you will find information about LEAST-TOXIC treatments (those that have the smallest impact on humans, pests, wildlife and insects, like bees and ladybugs, which benefit the garden) as well as HARD PESTICIDE treatments (those that have greater impact on humans and the environment).
Integrated Pest Management (IPM) strives to optimize plant health by:
IPM also means knowing as much about each pest as possible.
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woody perennial tree care2
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Prune out fireblight strikes on hot, dry days. Sterilize pruners between cuts.6
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Prune out fireblight strikes on hot, dry days. Sterilize pruners between cuts.8
Trees may have spots on leaves from earlier fungal infections, no need to treat in hot, dry weather if you keep irrigation water off leaves!9
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Aphid populations start to decrease if weather is hot and dry12
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Still time to manage Codling Moth, what product you spray determines how often you need to reapply for control.16
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Black vine weevil is notching leaves of peonies, lilacs and other landscape plants, treat larva in soil when Spirea vanhoutii is finished blooming.19
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Cherry fruit fly is usually in cherries by middle of July - to late to treat22
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mow seed producing weeds(like knapweed) when they are in full flower and before they seed.26
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Hobo spiders start to move indoors - seal and/or spray foundation perimeters.28
Hobo spiders start to move indoors - seal and/or spray foundation perimeters.29
Mourning Cloak Butterfly larvae may be present on aspen, willow, elm and poplar trees. No need to treat them.30
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