Answers
I have an arborvitiae and two well established cedar shrubs that are covered with bag worms and the foliage is starting to turn brown. I live in Iowa. What's the best treatment? Will my shrubs die?
My son is a professional nurseryman and he says if they are smaller, perhaps an inch or less, spray with Bt, [Bacillus thurgiensis]. Your local nursery should know about this and have it. If they are larger and you don't perceive a worm in the bag, hand pick them off.
They are in effect strangling the branches and you may eventually have to trim off some dead branches.
Last year I had a TERRIBLE Bag WORM infestation on one of my large ornamental evergreens. It pretty much defoliated the whole darn thin before I Malathioned them and killed them. The branches are still pretty supply (not dried out). I was wondering what the prognosis for this tree might be?? It is now late March and I have not seen any new green appearing yet, but I am uncertain when evergreen shrubs/trees in N. Texas might start normally filling out...
Thanks!
just watch it for a while and if it doesnt want to sprng back by say the end of july then you have a lost cause. But you still have time to replant something new and gets its root system ready for winter.
Try it and let us know.
The trees in my backyard are infected with bag worms. Can anyone tell me how to get rid of them?
While burining works it is not the best method over all because the worms will return again and again. It can also be dangerous if you choose not to cut the branches to be burned because you can set the whole tree on fire. If you use that method please be sure to have the garden hose handy.
I would also use another method to make sure you will not have eggs laid and then have the same problem next season.
Use BT. You spray this on your plants and when the critters eat it their insides will disolve from ingestion of the BT. They eat it when consuming leaves in their larval stage, therefore, they never make it to the adult moth stage when they would lay eggs and start the process again.
You can use other insecticides. The following are labeled for such use: acephate (Orthene), bendiocarb (Ficam, Turcam), bifenthrin (Talstar), carbaryl (Sevin), chlorpyrifos (Dursban), cyfluthrin (Tempo), diazinon, dimethoate (Cygon), fluvalinate (Mavrik), malathion, nicotine sulfate, pyrethrum, permethrin (Pounce), rotenone and trichlorfon (Dylox, Proxol). Please note that several of these are restricted use pesticides and you may or may not be able to use them where you live.
You may also hand pick the creatures and either squish or dispose of them in a can of water. Not a fun job by any means but it does work.
my pine tree is loaded with bag worms. how can i get rid of them and will it be to late?
Manually removing bagworm bags and destroying them is an effective control for light infestations. For heavier infestations you can consider spraying an organic pesticide like Bacillius thuringiensis var. kurstaki, a naturally occurring bacteria (DiPel), insecticidal soap, pyrethrin, or spinosad. If you are looking for a conventional pesticide, try sevin or malathion, though these can kill beneficial insects as well. Any spray works best when larvae are young. Inspect 2 weeks after first spray application and reapply if necessary.
What animal eats a bag worm????
They are parasitized by ichneumon wasps. Some birds and insects eat them as well.
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