Lavandula Brown Leaf Tips - Causes & Fixes

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Overwatering and Root Rot

Lavender is highly sensitive to moisture; excessive water saturates the soil, depriving roots of oxygen and causing fungal pathogens like Phytophthora to thrive. This leads to systemic failure where even the upper leaf tips turn brown first.

Very Common

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How to confirm: Stick your finger deep into the soil to check if it remains damp for several days after watering.

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1 Immediately stop watering and allow the soil to dry out completely to prevent further root decay.

GROWIT Soil Moisture Meter SMM-V3

Water Meters

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2 Repot the lavender in a well-draining medium, incorporating perlite or horticultural grit to improve aeration and prevent future saturation.

3 Trim away any mushy, blackened roots and replace the existing pot with one featuring excellent drainage, such as a Root & Vessel cylinder pot.

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Improper Drainage or Soil Compaction

Lavender requires gritty, well-draining soil (often sandy or loamy). Heavy clay soils trap water around the root zone, causing osmotic stress and tip necrosis.

Very Common

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How to confirm: Observe if water pools on the surface of the pot or garden bed immediately after a rain event or watering.

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1 Repot the lavender in a well-draining, gritty substrate to prevent water retention around the roots.

2 Amend the existing soil with perlite to improve aeration and reduce compaction.

3 Ensure the plant is in a container with adequate drainage holes and use a saucer to catch excess water without letting the pot sit in standing water.

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Salt Accumulation (Fertilizer Burn)

Lavender prefers lean soil and does not respond well to heavy nitrogen fertilization. Excess salts from fertilizers accumulate in the leaf margins, drawing moisture out of the cells and causing browning.

Common

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How to confirm: Check if the brown tips are accompanied by a white, crusty residue on the soil surface.

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1 Flush the soil thoroughly with large amounts of fresh, distilled, or rainwater to leach out accumulated mineral salts.

2 Repot the lavender in a well-draining, lean potting medium, such as a mix containing perlite or horticultural grit, to prevent future salt buildup.

3 Adjust your fertilization routine to use much lighter, infrequent doses, as lavender thrives in nutrient-poor soil.

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Low Humidity / Heat Stress

In extremely hot, dry environments with high airflow, the transpiration rate can exceed the plant's ability to move water to its furthest extremities, resulting in scorched leaf tips.

Common

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How to confirm: Monitor if the browning occurs more intensely during periods of extreme peak summer temperatures and low humidity.

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1 Increase local humidity around the plant by using a pebble tray or a fine misting tool to prevent further transpiration stress.