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Yellow Leaves in Basil Thai
verifiedReviewed by the GreenScout Team
Thai basil is a heat-loving culinary herb with narrow, purple-tinged leaves and distinctive anise-clove flavour
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Basil Thai care requirements
These care conditions are most relevant to yellow leaves in Basil Thai. Check each one as a potential cause.
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Light
Full sun (6–8 hours daily); requires intense light for best flavour development.
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Water
Keep soil evenly moist during growing season; water when top inch feels dry. Reduce in cooler months.
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Fertiliser
Light to moderate feeder; apply balanced liquid fertilizer (5–5–5) every 2–3 weeks during active growth.
symptoms
Symptoms to look for in Basil Thai
- fiber_manual_recordPale green turning yellow
- fiber_manual_recordYellowing starting from lower leaves
- fiber_manual_recordInterveinal yellowing
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Common causes in Basil Thai
- 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 Basil Thai
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 Basil Thai
Adjust watering schedule. Feed with balanced fertiliser. Check for pests.
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Preventing yellow leaves in Basil Thai
Water only when top 2 inches of soil are dry. Feed during growing season. Provide adequate light.