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Phytophthora Root Rot in Yew

How to identify and treat phytophthora root rot in Yew.

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Yew care requirements

water
Moderate water needs once established; drought-tolerant but prefers consistent moisture in first 2 years
soil
Well-draining, fertile soil; tolerates chalk, clay, and acidic soils
light
Full shade to partial sun; tolerates deep shade better than most conifers
symptoms

Symptoms to look for in Yew

  • fiber_manual_recordWilting, yellowing, or thin, sparse foliage despite adequate watering
  • fiber_manual_recordDark, mushy, foul-smelling roots that slough off outer tissue when squeezed
  • fiber_manual_recordSlow decline in growth and eventual plant death
help

Common causes in Yew

Caused by soil-borne Phytophthora species that produce motile spores which thrive and spread in waterlogged, poorly drained soil, infecting fine feeder roots first.

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How to treat phytophthora root rot in Yew

Improve drainage immediately, reduce watering frequency, and remove severely affected plants; fungicide drenches may help protect valuable plants caught early.

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Preventing phytophthora root rot in Yew

Plant in well-drained soil or raised beds, avoid overwatering, and choose resistant rootstocks or species in areas prone to wet soil.