I am still getting phone calls and questions about bagworms.
Generally, from about mid-May through the end of June, larvae hatch from eggs and exit the old bags, construct their own silken bag and begin feeding on the foliage.
Widely recognized as a notable pest of eastern red cedar and junipers, bagworms will attack arborvitae, spruce and pine.
An array of broadleaf trees, shrubs and ornamentals can also serve as hosts to bagworms.
It is getting too late in the season for control measures this year. Once the worms are back in their egg sacks, it is too late.
Handpicking will rid your tree of the unsightly bags and decrease next year’s infestation.
The best time to do this is in the winter when the bags stand out against the foliage of the evergreens or when the leaves drop off deciduous trees.
Handpicking should be completed by late April or early May before the larvae hatch.
Handpicking is not practical for large populations or very large trees.
Mark your calendars for next year to use insecticide controls. Typically, in this area, larvae will begin emerging in mid-May.
If you let them get too large, insecticidal treatments will be ineffective. It may take several years to get a handle on the infestation.
Through spray coverage and complete saturation is necessary for effective control. You should begin scouting now to determine your situation and begin an effective plan for control.
Thorough spray coverage is essential to reduce bagworm populations. Merely waving a sprayer nozzle in the direction of the tree and misting infested trees only kills a few of the bagworms.
Insecticides must be applied with sufficient sprayer pressure, and in adequate amounts of water carrier to ensure penetration of dense foliage.
For more information on bagworms, call the Ford County Extension Office at 620-227-4542 or visit us online at www.ford.ksu.edu.
Have a great weekend!