Borer
From BonsaiWIKI
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Borers - An overview
Some beetles have larval stages that infect the bark of bonsai, feeding mainly on the cambium and softwood areas between the bark and wood. Their activity may impede the flow of sap and result in the death of branches or trunk. Sudden, otherwise unexplained death of branches is quite often the cause of borers.
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Identification
Look for tiny 1/8-1/4" holes in the bark of trees, sometimes accompanied by sawdust that identifies the entry or exit points.
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Controls
Controls include Lindane (ISOTOX)
| Bonsai Pests |
| Animals: Rodents and Squirrels | Cats and dogs | Birds | Deer | Gophers and Moles |
| Chewing Insects: Grasshoppers | Ants | Borers | Caterpillars | Carpenter Bees | Cicidas | Leafminers | Slugs and Snails |
| Sucking Insects: Aphids | Scale | Mites | Spittlebugs | Wasps | Weevils |
| Soil organisms and parasites: Nematodes | Maggots | Grubs |
| Beneficial bugs: Ladybugs | Spiders | Lacewings | Praying Mantis | Worms |
