Can I use a systemic insecticide?

Systemic treatments can work, but physical removal of infested branches is often more effective for borers.

How do I know if the borer is still inside?

If you see fresh sawdust or new holes appearing, the borer is active. Keep monitoring the area closely.

What is eating my Java plum branches? Causes and fixes

Check these first

Look for small holes or sawdust on the branches.
Check the stems for small, waxy bumps.
Observe if specific branches are wilting while others look fine.

Likely causes

Stem Borer
Most likely
How to tell: Look for small holes in the bark or sawdust like frass near the base of the branches. The affected branch may wilt or break easily.
What to do: Prune out the infested branch well below the entry hole. Seal the cut with a pruning paste to prevent further entry.
Scale Insects
Possible
How to tell: You will see small, hard bumps on the stems that look like tiny shells. They suck the sap and weaken the plant.
What to do: Scrape off the insects with a soft brush or cotton swab dipped in rubbing alcohol. Follow up with a neem oil spray once a week for 3 weeks.

Pests on other plants

Find out what's wrong with your java plum

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 serious if you see multiple entry holes or if the main trunk is affected. This can kill the tree if left untreated.

Stopping it coming back

Keep your tree healthy with proper sun and water, as stressed trees are more attractive to borers.

Java plum: pests? Check yours with a photo

Every plant is a little different. Take a photo of your java plum 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

Can I use a systemic insecticide?: Systemic treatments can work, but physical removal of infested branches is often more effective for borers.
How do I know if the borer is still inside?: If you see fresh sawdust or new holes appearing, the borer is active. Keep monitoring the area closely.

What is eating my Java plum branches?

Check these first

Likely causes

Stem Borer

Scale Insects

Find out what's wrong with your java plum

When to worry

Stopping it coming back

Java plum: pests? Check yours with a photo

Questions people ask

Guides to these causes

More problems with Java plum