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Yellow Leaves in Mahonia

verifiedReviewed by the GreenScout Team

Mahonia aquifolium, or Oregon Grape, is an evergreen shrub featuring pinnate, holly-like glossy foliage that turns bronze-purple in cool weather

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Mahonia care requirements

These care conditions are most relevant to yellow leaves in Mahonia. Check each one as a potential cause.

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Light
Partial shade to full shade. Tolerates deep shade; colors less vibrant in shade but still attractive.
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Water
Moderate watering during growing season. Reduce in winter. Once established, fairly drought-tolerant.
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Fertiliser
Light feeding in spring. Mulch annually to improve soil over time.
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Symptoms to look for in Mahonia

  • fiber_manual_recordPale green turning yellow
  • fiber_manual_recordYellowing starting from lower leaves
  • fiber_manual_recordInterveinal yellowing
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Common causes in Mahonia

  • fiber_manual_recordOverwatering
  • fiber_manual_recordUnderwatering
  • fiber_manual_recordNutrient deficiency
  • fiber_manual_recordLow light
  • fiber_manual_recordRoot rot
  • fiber_manual_recordPests
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How to diagnose yellow leaves in Mahonia

Check soil moisture first. Wet soil + yellow lower leaves = overwatering. Dry soil = underwatering. Yellowing between veins = nutrient deficiency.

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How to treat yellow leaves in Mahonia

Adjust watering schedule. Feed with balanced fertiliser. Check for pests.

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Preventing yellow leaves in Mahonia

Water only when top 2 inches of soil are dry. Feed during growing season. Provide adequate light.

Other Mahonia problems