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New England Pest Monitoring and Management Checklist Number 17
August - September
2000 - 2399 GROWING DEGREE DAYS

BEGIN BLOOM

FULL BLOOM
Franklinia alatamaha (Franklinia)
Hepticodium micinioides (seventh son flower)

END BLOOM
Clematis paniculata (sweet autumn clematis)
Polygonum cuspidatum (Japanese knotweed)

PLANT PEST ACTION
Andromeda Andromeda Lacebug (last generation) Inspect underside of new growth for adults.Treat with registered pesticide if needed.
Cherry White Prunicola Scale Inspect for pale white crawlers on stems and leaves. Last chance to treat with registered pesticide if needed.
Crabapple Eastern Tent Caterpillar Examine branch tips for shiny black egg masses and remove.
Dogwood Dogwood Borer Inspect trunk and large branches for holes and fresh sawdust. Destroy by hand or treat with nematodes.
  Dogwood Sawfly

Inspect leaves for clusters of larvae covered in white wax. Pick off infested leaves or treat with registered pesticide if needed.

Euonymus Euonymus Scale Inspect for red-orange crawlers on stems and leaves. Last chance to treat with registered pesticide if needed.
Hardwoods Fall Webworm Check tip leaves for eggs and larvae. Prune or treat with reg. pesticide. Too late for B.T.
  Japanese Beetle Examine leaves for adults and skeletonizing. Treat with registered pesticide if needed.
  Two-Spotted Spider Mite

Strike branch on white surface. Check for white mites.

Hemlock Hemlock Woolly Adelgid Inspect for masses of white wax at base of needles. Coverage and follow-up vigilance critical.
Honeylocust Honeylocust Mite Shake branch over white surface. Look for reddish-brown mites and treat with registered pesticide if needed.
Larch Larch Casebearer Inspect needles for tip browning and young cases. Treat with registered pesticide if needed
Oak Oak Skeletonizer (2nd Gen) Too late for B.T. Larvae vulnerable to other registered insecticides until they begin dropping.
Pine (soft) White Pine Aphid Inspect for black eggs on needles. Remove infested needles if few or treat with soap or oil.
Rhododendron Rhododendron Borer Inspect large lower branches for holes and fresh sawdust. Destroy by hand or treat with nematodes.
Spruce Eastern Spruce Gall Adelgid Inspect green galls at base of new growth. Treat with registered pesticide if needed and galls are open.

END: Black Vine Weevil, Bronze Birch Borer, Juniper Webworm

2000-2399 GDD
August-September

Additional Information:
Bacillus thuringiensis (B.t.)
Beneficial Nematodes
Bio-Rational Pesticides
Current Growing Degree Day Accumulations
Filing a School IPM Plan in Massachusetts Adobe PDF icon
Fundamentals of An Insect and Mite IPM Program
Horticultural Oils
Managing Insects Using Superior or Horticultural Oils
Monitoring: Growing Degree Days and Plant Phenology
Monitoring and Management Checklists
New Insect Products and How They Work

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