Death of Established Taxus - Knowledgebase Question

kennett square, PA
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Question by kpratt1009
February 6, 1999
Established hedge of ten year old Hicks Yew has begun to have random plants slowly turn yellow and die. There have been no changes in drainage, no excess applications of fertilizer or mulch. Could there be root fungal or bacterial pathogens causing the plants to die?

Answer from NGA
February 6, 1999
What a perplexing turn of events. I would suspect either something going on underground, or some sort of infection or infestation. We have had a very dry summer, fall and so far winter and a number of established plants are showing problems for that reason. It is also possible that the plants' roots have grown in a circular direction underground (due to improper planting technique or serious potbound condition prior to planting) and are now beginning to strangle themselves. It is also possible that unbeknownst to you, "something has happened" to those plants, perhaps inadvertently due to pets, children, workmen, a neighbor.... With regard to other problems, yews can be attacked by blights, root rots, other assorted fungus and of course, insects. You might wish to consult with a professional arborist and/or with your County Extension (696-3500) to try to determine the cause of the browning.

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