yews - Knowledgebase Question

Question by jstreet766
June 5, 2010
zone 5 havent been trimmed this year , some tops are sprouting new growth, other s are browning and needles falling...insect or disease problem? please help!!

Answer from NGA
June 5, 2010


I suspect winter damage. They aren't really affected as much by the severe cold as they are by the snow. When the winter sun reflects off the snow onto a yew, the dark green foliage quickly absorbs the heat. Then the sun goes behind the clouds or sets and the warm foliage is suddenly frozen again. On yews, this results in severe browning of needles and even death of some of the twigs. The best option in our area is to grow specific winter-burn resistant varieties. In general, Yews require a well-drained soil but it can be sandy, average or light clay. Yews need to be kept evenly moist. They aren't very drought tolerant. Aside from the weather, when Yews get in trouble, it is almost always due to soil that is too wet.

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