Will these pests kill my sea kale?

Usually not, but they can severely weaken young plants. Mature plants can typically handle some leaf loss.

Are organic methods effective?

Yes, handpicking and using iron phosphate baits are very effective for managing slug populations.

Why are my sea kale leaves being eaten? Causes and fixes

Check these first

Inspect the undersides of the leaves for eggs or pests.
Look for slime trails on the soil around the base of the plant.
Check the plant during the evening hours with a flashlight.

Likely causes

Slugs and Snails
Most likely
How to tell: You will see irregular holes in the leaves and shiny slime trails left behind on the foliage or soil.
What to do: Handpick the pests in the early morning or evening when they are active. You can also place copper tape around the base of the plant or use iron phosphate bait pellets according to the package instructions.
Cabbage White Caterpillars
Possible
How to tell: Small green caterpillars hide on the underside of leaves and eat large sections of the leaf tissue.
What to do: Inspect your plants weekly and pick off any caterpillars you find. If the infestation is heavy, apply a spray containing Bacillus thuringiensis to the leaves.

Pests on other plants

Find out what's wrong with your chou marin

The list above covers the usual causes. Pocket Botanist looks at a photo of your actual plant and tells you the likely cause, how serious it is, and what to try first. Identification and a health check are free.

When to worry

It is normal to see minor damage on older leaves, but you should act if the entire plant is being defoliated.

Stopping it coming back

Keep the area around your sea kale clear of debris and mulch to remove hiding spots for slugs.

Chou marin: pests? Check yours with a photo

Every plant is a little different. Take a photo of your chou marin and Pocket Botanist tells you which cause is most likely, how serious it is, and what to try first. A few checks a day are free. Save the plant and you get care reminders timed for it.

Get the app · Or check it from a photo now, free

Questions people ask

Will these pests kill my sea kale?: Usually not, but they can severely weaken young plants. Mature plants can typically handle some leaf loss.
Are organic methods effective?: Yes, handpicking and using iron phosphate baits are very effective for managing slug populations.

Guides to these causes

Slugs and Snails

Why are my sea kale leaves being eaten?

Check these first

Not sure what's wrong with your chou marin?