Strawberry plant leaves curling?

Curling strawberry leaves usually mean the plant is under water or weather stress, but pests, mildew, frost, and spray drift can cause the same look.

Answer what you can see

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Push a finger two inches into the soil. What does it feel like?

Which leaves are affected?

What has the weather been doing?

How fast did this happen?

Some answer sets overlap: dry heat stress, herbicide or spray burn, and powdery mildew can all fit dry soil, while aphids or mites and powdery mildew can both fit curled new growth; use the visible checks, especially insects, white powder, spray history, and soil wetness, to tell them apart.

The causes in full

Dry soil and heat stressMOST COMMON

How to tell
The soil is dry or hard two inches down, leaves curl or droop most in the hot part of the day, and the sun-facing side often looks worst.

What to do
If the soil is dry or baked hard two inches down, water slowly at the base until the bed is moist 6-8 inches deep. Add straw or leaf mulch around, not over, the crowns, and use temporary afternoon shade only during extreme heat.

Aphids or cyclamen mites on new growthCOMMON

How to tell
Look closely at the newest curled leaves and leaf stems for clusters of tiny aphids, sticky residue, ants, or very crinkled stunted new leaves that suggest mites.

What to do
If you find aphids, knock them off with a firm water spray and repeat every few days, or use insecticidal soap labeled for strawberries. If new leaves stay tiny, bronzed, and distorted with few visible insects, remove the worst leaves and badly infested plants because cyclamen mites are hard to control in a bed.

Waterlogged soil or root rotCOMMON

How to tell
The soil stays wet two inches down, older lower leaves curl, yellow, or wilt, and the plant may look thirsty even though the bed is soggy.

What to do
If the soil is waterlogged two inches down, withhold irrigation until the top few inches are no longer soggy. Open drainage channels, keep mulch off the crowns, and remove collapsed plants with brown or mushy crowns.

Powdery mildew diseaseLESS COMMON

How to tell
Check curled leaves for white powdery patches, especially underneath, with leaf edges cupping upward and reddish or purplish blotches on some leaves.

What to do
Remove the worst infected leaves and thin crowded runners so air moves through the bed. Water at the soil line only if the soil is dry two inches down, and use a fungicide labeled for strawberries if the white powder keeps spreading.

Herbicide drift or spray/fertilizer burnLESS COMMON

How to tell
Suspect this when curling appeared fast after lawn weed killer, weed-and-feed, strong fertilizer spray, or other garden spray, especially on the windward side or the side facing a sprayed path or lawn.

What to do
Stop all sprays and fertilizers for now, and if the exposure just happened, rinse leaves with plain water. If the soil is dry two inches down, water normally to reduce stress; do not flush a damp or waterlogged bed.

Cold snap or late frost injuryLESS COMMON

How to tell
New leaves, flowers, or exposed leaf edges look curled, bronzed, blackened, or limp right after a cold night.

What to do
Leave damaged leaves in place for a few days, then trim only tissue that is fully brown or mushy. Cover the bed with row cover before the next predicted frost and uncover it when temperatures rise.

Will it recover?

Leaves curled only from thirst or heat may partly uncurl, but leaves damaged by pests, mildew, frost, rot, or spray usually stay distorted and the goal is healthy new growth.

Stopping it happening again

Keep the bed evenly moist but not soggy, mulch with straw, maintain airflow, inspect new growth weekly for pests or mildew, protect from late frost, and avoid spraying weed killers or strong fertilizers near strawberries.