Bagworm egg sacks are brown and one and a half to two inches 3 8 to 5 cm long.
Evergreen bagworm pesticide.
Begin looking for bagworms during the winter or early spring.
It also attacks certain deciduous trees such as black locust honeylocust and sycamore.
Bagworms construct a bag around themselves made of plant debris presenting a challenge to control efforts.
Knowing how to get rid of bagworms is half the battle.
The evergreen bagworm the snailcase bagworm and the grass bagworm.
An insecticide with malathion diazinon or carbaryl such as ortho tree shrub insect killer available on amazon can rid you of a bagworm problem if applied to bushes and trees when the worms.
It is recommended for use on ornamental shrubs and fruit trees.
However winds can blow the worms from plant to plant which will spread bagworms quite efficiently.
Bagworm sacks can be very hard to find because they look like pine cones.
How to get rid of bagworms.
The active ingredient is spinosad a fermentation derived.
They are covered with dead needles so they appear more noticeable in contrast to the green deciduous needles at this time.
The bagworm is most common in southern regions of pennsylvania.
Treatment for bagworms can only start at certain times during their lifecycle.
Effective bagworm pesticide for heavy infestations of bagworms.
Because of this if you are using an insecticide against bagworms the penn state university extension recommends applying it early while the larvae are small and most susceptible.