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.
6Aphids - Winged Adults, no need to spray, plan to spray dormant oil in the spring or use a systemic drench
10Prepare plants for winter by slowly decreasing water. Do not prune until plants have gone dormant(dropped their leaves)
13leaf spots and Twig blights - pruned out blighted twigs on a dry day. Rake and remove leaves as they fall.
20Protect young tree trunks with white latex paint or wraps to prevent winter sunscald
23Mulch plants with 2" compost, straw, ground bark, pine needles after a hard frost.
27Protect evergreens like rhododendrons by spraying an antitranspirant to protect from winter desiccation