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Scab in Pyracantha

How to identify and treat scab in Pyracantha.

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Pyracantha care requirements

water
Moderate watering during growing season. Once established, relatively drought-tolerant. Reduce watering in winter.
soil
Well-drained soil. Tolerates poor, chalky, and acidic soils. Avoid waterlogged conditions.
light
Full sun. At least 6 hours of direct sunlight daily for optimal flowering and berry production.
symptoms

Symptoms to look for in Pyracantha

  • fiber_manual_recordRaised, rough, corky patches on tubers, fruit, or root surfaces
  • fiber_manual_recordDark, scabby lesions that may crack open
  • fiber_manual_recordMostly cosmetic damage, though severe cases can affect storage quality
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Common causes in Pyracantha

Caused by various pathogens depending on host — for example, Streptomyces scabies (a soil-borne actinomycete) causes common potato scab, favored by dry conditions and alkaline soil during tuber formation.

healing

How to treat scab in Pyracantha

There is no in-season cure; keep soil consistently moist during the susceptible tuber-forming stage to reduce severity, and peel affected produce, which remains edible under the skin.

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Preventing scab in Pyracantha

Avoid liming soil before planting susceptible crops, rotate crops on a multi-year cycle, and choose scab-resistant varieties where available.

Scab in Pyracantha — Symptoms & Treatment | GreenScout