Pest Management Calendar

 

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:

  • Managing garden and landscape soils for good drainage and aeration
  • Building soil by adding organic matter and properly timed fertilizers
  • Pruning and irrigating according to the needs of particular plants
  • Knowing the plant's level of susceptibility to pest damage

IPM also means knowing as much about each pest as possible.

  • When is the pest MOST vulnerable, infective, or invasive?
  • When is the pest most vulnerable to least-toxic management strategies?
  • What is the least-toxic management tool that can be used successfully?
July
Sunday
Monday
Tuesday
Wednesday
Thursday
Friday
Saturday

30

31

32

33

34

1

woody perennial tree care Don't Fertilize woody perennial trees and shrubs any more, it encourages to lush of growth in case of a early hard freeze.

2

3

4

5

Prune out fireblight strikes on hot, dry days. Sterilize pruners between cuts.

6

7

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

10

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!

11

Aphid populations start to decrease if weather is hot and dry

12

13

14

15

Still time to manage Codling Moth, what product you spray determines how often you need to reapply for control.

16

17

Still time to manage Codling Moth, what product you spray determines how often you need to reapply for control.

18

Black vine weevil is notching leaves of peonies, lilacs and other landscape plants, treat larva in soil when Spirea vanhoutii is finished blooming.

19

20

21

Cherry fruit fly is usually in cherries by middle of July - to late to treat

22

23

24

25

mow seed producing weeds(like knapweed) when they are in full flower and before they seed.

26

27

Hobo spiders start to move indoors - seal and/or spray foundation perimeters.

28

29

Mourning Cloak Butterfly larvae may be present on aspen, willow, elm and poplar trees. No need to treat them.

30

31

1

2

3

4

5

6

July Pest Breakdown