Check these first
- Inspect the undersides of new leaves for clusters of tiny insects.
- Look for sticky honeydew on the foliage or nearby surfaces.
- Check for ants traveling along the branches.
Likely causes
Aphid infestation
Most likelyHow to tell: You will see clusters of tiny green or black insects on new shoots and sticky residue on the leaves below.
What to do: Spray the plant with a strong stream of water to knock them off. If they persist, apply insecticidal soap or neem oil every 5 to 7 days until they are gone.
Ant farming
PossibleHow to tell: Ants crawling up and down the stems often indicate they are protecting aphids for their honeydew.
What to do: Focus on clearing the aphids first, as the ants will leave once their food source is gone. You can also use a sticky barrier around the base of the trunk to stop ants from climbing.
Find out what's wrong with your mock orange
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
A few aphids are normal, but you should worry if the new growth starts curling or if the plant looks stunted. If the infestation covers the entire shrub, take action immediately to prevent damage.
Stopping it coming back
Encourage beneficial insects like ladybugs to visit your garden, as they are natural predators of aphids. Avoid over-fertilizing, as excess nitrogen creates soft growth that aphids love.
Mock orange: pests? Check yours with a photo
Every plant is a little different. Take a photo of your mock orange 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 Mock orange?
- Usually no, but they can weaken the plant and make it look messy. Severe infestations can stunt growth and reduce flower production.
- Can I just wash them off?
- Yes, a firm spray of water is often enough to control a light infestation. Do this in the morning so the leaves have time to dry.
Guides to these causes
More problems with Mock orange
- What are these spots on my Mock orange leaves?
- Why is my Mock orange not blooming?
- Why is my mock orange growing so leggy?
- Why are my mock orange leaves curling?
- Why are my mock orange leaves turning yellow?
- Why are my mock orange leaves getting brown tips?
- Why is my mock orange plant drooping?
- Why is my mock orange losing its leaves?
- Why is my mock orange showing signs of root rot?
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.

