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New England Pest Monitoring and Management Checklist Number 10
June
600 - 699 GROWING DEGREE DAYS

BEGIN BLOOM
Ligustrum spp. (privet)
Sambucus canadensis (elderberry)
Cotinus coggygria (smokebush)

FULL BLOOM
Catalpa speciosa
Hydrangea macrophylla
Syringa reticulata (Japanese. tree lilac)
Kalmia latifolia (mountain laurel)

END BLOOM
Chionanthus virginicus (fringetree)
Philadelphus sp. (mock orange)
Rhus radicans (poison ivy)
Rosa multiflora

PLANT PEST ACTION
Arborvitae Arborvitae Leafminer Tiny silver- white moths fly when branch is shaken. Treat with registered pesticide if needed.
Birch Aphids Check for natural enemies before making treatment decision.
  Birch Leafminer (2nd gen.) Treat only if 1st generation damage was severe to protect new growth
Boxwood Boxwood Leafminer Check yellow traps for adult flies, look for leaf spots with brown pupae protruding from the underside. Treat if detected.
Catalpa Catalpa Aphid Inspect underside of leaves for green-yellow nymphs. Look for lacewing eggs, ladybugs,and other natural enemies.
Cherry White Prunicola Scale Treat before crawlers wax over.
Crabapple Green Peach Aphids Check for natural enemies before making treatment decision.
Dogwood Dogwood Borer Inspect trunk and large branches for holes and fresh sawdust Destroy by hand or treat with nematodes.
Elm Elm Leaf Beetle Treat foliage when larvae or skeletonizing is detected. Trunk applications kill migrating larvae.
Euonymus Euonymus Scale Treat before crawlers wax over.
Hardwoods Polydrusus Weevil Check for notching along leaf margins and shiny metallic green-bronze weevil. Treat with registered pesticide if needed
Hemlock Hemlock Looper Shake branches, look for green inchworms dropping on silk threads. Treat with registered pesticide such as B.T. if needed
Holly Cottony Camellia Scale Inspect foliage and stems for large , white waxy scales and new crawlers.
Juniper Juniper Scale Treat before crawlers wax over.
Linden Linden Bark Moth Examine trunk and branches for holes, reddish frass and small moths. Treat with registered pesticide if needed.
Mountainash Mountainash Sawfly Examine leaflets in shadiest areas for clusters of yellow-green larvae. Pick off or treatwith registered pesticide if needed.
Oak (Red Group) Oak Skeletonizer Examine leaves for lacy skeletonizing and small green larvae. Treat with registered pesticideif needed.
Pine (Soft) White Pine Weevil Inspect leaders flagging. Prune out infested leaders before they turn brown.
Rhododendron Rhododendron Borer Check pheromone traps for male moths. Inspect large lower branches for holes and fresh sawdust.
Yew Black Vine Weevil Check burlap traps for adult weevils. Treat with registered pesticide if needed two weeks after first captures

END: Andromeda Lacebug, Boxwood Mite, Holly Leafminer, Larch Casebearer, Pine Bark Adelgid, Taxus Mealybug, Two-Spotted Spider Mite, Woolly Beech Aphid

600-699 GDD
June

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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