Check these first
- Inspect the undersides of new leaves for tiny moving insects.
- Check for sticky residue on the leaves or stems.
- Look for fine webbing near the joints of the plant.
Likely causes
Aphid infestation
Most likelyHow to tell: You will see small green or black insects clustering on new growth and flower spikes. The leaves may also look sticky or distorted.
What to do: Spray the plant with a strong stream of water to knock them off. If they persist, apply insecticidal soap every 5 to 7 days until they are gone.
Spider mites
PossibleHow to tell: Look for fine webbing between the stems and tiny yellow stippling on the leaves. These pests thrive in dry, hot conditions.
What to do: Increase the humidity around your plant by misting it daily. Use neem oil to treat the infestation once a week for 3 weeks.
Find out what's wrong with your redshank
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
If the plant is covered in bugs and the leaves are curling or dying, it is time to act immediately. A few stray bugs are normal, but a full colony will weaken the plant.
Stopping it coming back
Keep your Redshank well watered and healthy, as stressed plants are more attractive to pests. Check your plant weekly during the growing season.
Redshank: pests? Check yours with a photo
Every plant is a little different. Take a photo of your redshank 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 aphids kill my Redshank?
- A small number of aphids usually will not kill the plant, but they can stunt growth and spread viruses. It is best to remove them as soon as you see them.
- Can I use dish soap to kill the bugs?
- Yes, you can mix a teaspoon of mild dish soap with a quart of water. Spray it on the pests, but make sure to rinse the leaves off after a few hours to prevent damage.
Guides to these causes
More problems with Redshank
- Why does my Redshank have white spots on its leaves?
- Why is my Redshank drooping?
- Why are my Redshank leaves turning yellow?
- Why are my Redshank leaf tips turning brown?
- Why is my Redshank dropping its leaves?
- Why is my Persicaria maculosa suffering from root rot?
- Why is my Persicaria maculosa growing so leggy?
- Why are the leaves on my Persicaria maculosa curling?
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.

