Skip to content
Pocket Botanist
Get the app

Java plum · Syzygium cumini

Why is my Syzygium cumini showing signs of root rot?

Root rot in a Java plum is usually caused by soil that stays soggy for too long, preventing the roots from breathing. Check the drainage holes in your pot immediately to ensure water is not pooling at the bottom.

Not sure it's this? Check a photo of your plant for free

root rot on a plant
Photo: Ninjatacoshell, CC BY-SA 3.0

Check these first

  1. Smell the soil for a musty or rotten odor.
  2. Check if the pot has functional drainage holes.
  3. Feel the soil to see if it is waterlogged.

Likely causes

  1. Overwatering

    Most likely

    How to tell: The leaves turn yellow and drop, and the soil smells sour or moldy. The stems may feel soft near the base.

    What to do: Stop watering immediately and let the top 2 inches of soil dry out. If the rot is severe, repot the plant into fresh, well-draining soil and trim away any black, mushy roots.

  2. Poor Drainage

    Possible

    How to tell: Water sits on the surface of the soil for a long time after watering. The pot lacks sufficient holes to let excess moisture escape.

    What to do: Repot the tree into a container with large drainage holes. Use a potting mix amended with perlite to improve aeration.

Root rot in 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.

Download on the App StoreGet it on Google Play

When to worry

If the leaves are wilting despite wet soil, the rot is likely advanced. This is a serious condition that requires immediate repotting.

Stopping it coming back

Always check that the top inch of soil is dry before watering again. Never let the pot sit in a saucer of standing water.

Java plum: root rot? 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.

Download on the App StoreGet it on Google Play

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

Questions people ask

Can I save a tree with root rot?
Yes, if you catch it early. Trim the dead roots and repot in fresh, dry soil.
How often should I water to avoid this?
Water every 3 to 7 days, but always test the soil moisture first. If it feels damp, wait another day.

More problems with Java plum

Back to the Java plum 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.