🥕 Carrot diseases — identify them by photo

An atlas of the 6 most common carrot diseases, pests and nutrient deficiencies. Compare the symptom photos with what you see on your plant, then open the full description.

Identify it by photo

Click the photo that looks closest to the problem on your plant.

Sclerotinia rot — Root — white, cottony mycelium covering the rotting tissue Sclerotinia rot Carrot fly — Roots — rusty-brown tunnels and grooves left by feeding maggots Carrot fly Aphids — Foliage — badly distorted, curled leaflets with feeding aphids Aphids Carrot fly — White carrot fly maggot emerging from a tunnel in the root Carrot fly Aphids — Close-up — willow-carrot aphid on a leaf stalk Aphids Carrot fly — Adult carrot fly on the foliage Carrot fly

All diseases

Alternaria leaf blight of carrot Dark spots on leaves Bacterial soft rot Watery, pale brown patches on the root Sclerotinia rot Sclerotinia rot Dense, white, cottony fungal growth on the root and crown Powdery mildew A white, powdery bloom on leaf stalks and blades Carrot fly Carrot fly Rusty-brown surface tunnels and grooves on the root Aphids Aphids Clusters of small green aphids on the young leaves

📅 When to Sow Carrot? →

⚠️ Before you reach for a spray

This atlas is informational and still growing — different diseases can look almost identical. Confirm the diagnosis and read the product label before applying any plant protection product. If you are unsure, ask your local extension or advisory service.

Keep the disease atlas with you in the garden

In the app you can identify a disease from photos, work out the spray dose for your own bed and log the treatment in your task calendar. Free, no sign-up, works offline.

Open the atlas in the app →

Diseases of other vegetables

← Disease atlas