Check these first
- Inspect the undersides of the leaves for small insects.
- Look for slime trails on the soil or leaves.
- Check the plant at night with a flashlight.
Likely causes
Slugs
Most likelyHow to tell: You will see irregular holes in the leaves and shiny slime trails left behind on the foliage or soil.
What to do: Pick them off by hand in the evening when they are active. You can also place a shallow dish of beer near the plant to trap them or use iron phosphate pellets around the base.
Aphids
PossibleHow to tell: Tiny green or black insects cluster on the new growth or flower buds. They cause the leaves to look distorted or sticky.
What to do: Spray the plant with a gentle stream of water to knock them off. If they persist, apply insecticidal soap once a week until they are gone.
Find out what's wrong with your marsh violet
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.
Scan with your phone's camera to get the app
Or go to pocketbotanist.app/get on your phone
When to worry
Small holes are annoying but rarely kill the plant. If the entire plant is being defoliated, you need to act immediately.
Stopping it coming back
Keep the area around your violet clear of debris and leaf litter where slugs like to hide. Maintain good airflow to discourage pests.
Marsh violet: pests? Check yours with a photo
Every plant is a little different. Take a photo of your marsh violet 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.
Scan with your phone's camera to get the app
Or go to pocketbotanist.app/get on your phone
Get the app · Or check it from a photo now, free
Questions people ask
- Will slugs kill my Marsh violet?
- Usually not, but they can make it look very ragged. If they eat all the leaves, the plant will struggle to photosynthesize and may die.
- Can I use chemical pesticides?
- It is better to avoid harsh chemicals. Stick to organic methods like handpicking or insecticidal soap to keep your garden safe.
Guides to these causes
More problems with Marsh violet
- What is the white dust on my Marsh violet?
- Why is my Marsh violet wilting?
- Why is my Marsh violet looking so leggy?
- Why are my Marsh violet leaves turning yellow?
- Why are my Marsh violet leaf tips turning brown?
- Why is my marsh violet not flowering?
- Why does my marsh violet have root rot?
- Why are my marsh violet's leaves curling?
Back to the Marsh violet guide
This article was generated with AI on from the plant’s care profile and is general information, not horticultural advice. Read about how we build these guides.

