Questionmy box ornamental hedges have been lovely over the years now at random one will start turning yellow and die.I cannot find a bug or fungus...nothing works please help?
AnswerWhat is your feeding and watering regimen on these hedges? Yellowing can be a symptom of low nitrogen, low iron, or high alkalinity in the soil. Over the years, the soil chemistry may change, and you may need to supplement the soil with some kind of nutrients.
Do you have any photos you can send me? It is hard to tell without examining the plants directly.
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