Do Not Increase Plant Susceptibility To Problems Through
DO NOT INCREASE PLANT SUSCEPTIBILITY TO PROBLEMS THROUGH NEGLECT OR IMPROPER CARE. Additional information is in Extension bulletin E-1936, "Selecting Ornamental Plants" and
List of files and visuals associated with this text.
Extension bulletin E-1947, "Planting and Care of Ornamental Landscape Plants."
All plants can be affected by environmental and cultural problems. Only those occurring most frequently are listed here. Use pesticides only after an accurate diagnosis and control recommendation have been made. Use pesticides strictly in accordance with label directions. Always wear protective clothing and do not spray on windy days.
This list is for educational purposes only. Inclusion does not imply endorsement and omission does not imply discrimination. Not all of these pesticides are labeled or recommended in all states.
Arborvitae (Thuja) Cultural Problems Specific light requirement
Environmental Problems Fall needle drop Winterburn
Disease Problems Juniper twig blight control - benomyl, bordeaux mixture Leaf blight control - copper spray or dust, bordeaux mixture Root rot no chemical control Tip blight, fungal control - benomyl
Insect Problems Arborvitae leafminers control - acephate Bagworms control - carbaryl, malathion, Bacillus thuringiensis
Fletcher scales control -adults: superior oil
crawlers: diazinon, pyrethrum, acephate, malathion, superior oil Root weevil larvae control - dursban Spider mites control - malathion, superior oil, insecticidal soap
Visuals associated with this text.
| Visual title - Visual size | Visual title - Visual size |
|---|---|
| Arborvitae leaf miner - 43K | Arborvitae leafminer damage - 48K |
| Arborvitae leafminer damage larva - 46K | Arborvitae leafminer, damaged shoot - 38K |
