How do I save a dying globe arborvitae?
Question:It's in a bed about 3 ft wide and 12ft deep. It shares space with a Rododendrum and another globe arborvitae. The other plants are quite healthy. Any products or ideas out there to save this thing?
Answers:
Have a really close look at the plant. The problem could be an insect, a fungus, or something cultural (water, light, or soil problem). Little bugs, webby areas, or wooly spots indicate insects. Tips of the leaves dying first? Inner leaves falling off? Spots on leaves? Maybe fungus. Since it's near another one that's healthy, it's probably not cultural.
If you see no evidence of insects or fungi, which can be treated with insecticide or fungicide, then I would try to boost the plant's immune system. Three different treatments come to mind. You could treat the plant to a nice soak in Superthrive according to package directions. Or give it a nice soak with Compost Tea - some local nurseries make this up now. A third alternative is a treatment of Mycogrow, which is a mixture of beneficial fungi.
my experience has shown that once one starts dying it's almost impossible to save it.
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