Mentha citrata Brown Leaf Tips - Causes & Fixes

error

Salt Accumulation (Fertilizer Burn)

Lemon Mint is sensitive to high salt concentrations in the soil. Excess minerals from fertilizers build up in the leaf tissue, drawing moisture out of the cell tips and causing them to desiccate.

Very Common

lightbulb

How to confirm: Check if you have recently fertilized heavily or if white crusty residue is visible on the soil surface.

build How to fix it

shopping_cart Recommended Products

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

2 Repot the plant in fresh, high-quality potting soil to provide a clean environment free of residual salts.

Espoma Organic Potting Soil Mix

15.1 L

$22

In Stock

3 Use a soil moisture meter to monitor watering levels and prevent future over-fertilization or salt buildup from stagnant moisture.

GROWIT Soil Moisture Meter - Blue

Water Meters

$12

In Stock

error

Low Humidity / Dry Air

Mentha citrata thrives in humid environments. When the air is too dry, the transpiration rate exceeds the plant's ability to pull water to the furthest extremities, leading to necrotic tips.

Very Common

lightbulb

How to confirm: Observe if the browning correlates with indoor heating use or low-humidity seasons.

build How to fix it

shopping_cart Recommended Products

1 Increase local humidity around the plant by using a pebble tray or a humidifier to prevent further tip necrosis.

Bleuhome 6-Pack 6in Plant Saucers Black

Pot Saucers

$6

In Stock

2 Mist the foliage regularly with a fine spray to provide immediate moisture to the leaves.

Flora Premium Plant Mister

Spray Bottles

$12

In Stock

3 Monitor soil moisture levels to ensure the plant is not also experiencing drought stress.

GROWIT Soil Moisture Meter SMM-V3

Water Meters

—

error

Water Stress (Inconsistent Watering)

Erratic moisture levels cause cellular damage in Mint species. Allowing the soil to dry out completely before watering again stresses the leaf margins, resulting in permanent brown edges.

Very Common

lightbulb

How to confirm: Stick your finger two inches into the soil to see if it has become bone-dry between waterings.

build How to fix it

shopping_cart Recommended Products

1 Monitor soil moisture levels closely using a moisture meter to ensure the soil remains consistently damp but not waterlogged.

GROWIT Soil Moisture Meter - Blue

Water Meters

$12

In Stock

2 Establish a regular watering schedule to prevent the soil from drying out completely between sessions.

Chapin 48000 0.5G Watering Can

2.3 L • Recycled Plastic

$12

In Stock

3 Prune away the dead, brown leaf tips with clean scissors to prevent further aesthetic decline and encourage fresh growth.

Fiskars 5/8" Bypass Pruning Shears

Cutting Tools

$13

In Stock

warning

Tap Water Chlorination/Mineral Content

Sensitive herbs like Lemon Mint can react to high levels of chlorine or fluoride found in municipal tap water, which accumulates in the leaf tips over time.

Common

lightbulb

How to confirm: Try using filtered or distilled water for one week to see if new growth appears healthy.

build How to fix it

1 Switch to distilled, rainwater, or filtered water to prevent the buildup of chlorine and minerals in the leaf tissue.

2 Allow tap water to sit uncovered for 24 hours before use to help chlorine dissipate naturally.

3 Flush the soil thoroughly with distilled water to wash away accumulated mineral salts from the root zone.

Mentha citrata – Brown Leaf Tips

search Possible Causes

Salt Accumulation (Fertilizer Burn)

Low Humidity / Dry Air

Water Stress (Inconsistent Watering)

Tap Water Chlorination/Mineral Content

Other Mentha citrata problems

Measuring System

Mentha citrata – Brown Leaf Tips

search Possible Causes

Salt Accumulation (Fertilizer Burn)

Low Humidity / Dry Air

Water Stress (Inconsistent Watering)

Tap Water Chlorination/Mineral Content

Other Mentha citrata problems