Skip to content

Red Maple · Acer rubrum

Why is my Red Maple showing signs of root rot?

Root rot is less common for a healthy Red Maple, but it usually happens when the soil stays soggy for too long. Check the soil moisture and drainage holes first to see if water is pooling around the roots.

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

Check these first

  1. Check the soil moisture level with your finger.
  2. Inspect the bottom of the pot for standing water.
  3. Look for a foul odor coming from the soil.

Likely causes

  1. Poor Drainage

    Most likely

    How to tell: The soil feels heavy and wet even a week after watering. You might notice a sour smell coming from the pot.

    What to do: Repot the tree into a container with better drainage holes using a well draining potting mix. Trim away any mushy, dark roots with clean shears before replanting. Let the top 2 inches of soil dry out before you water again.

  2. Overwatering

    Possible

    How to tell: The leaves look wilted or yellow despite the soil being constantly wet. The base of the trunk may feel soft or discolored.

    What to do: Adjust your watering schedule to every 10 to 14 days depending on the season. Always check the top 2 inches of soil with your finger before adding more water. Ensure the pot is not sitting in a saucer full of standing water.

Find out what's wrong with your red maple

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 trunk feels soft or the tree is dropping leaves rapidly, the damage may be severe. It is normal for a few older leaves to drop during the transition to a new environment.

Stopping it coming back

Use a porous potting mix and ensure your container has adequate drainage holes. Only water when the top layer of soil feels dry to the touch.

Keep your red maple healthy from here

Save your plant in Pocket Botanist and you get care reminders timed for this plant, plus a care history that shows what worked. Identification and a health check are free.

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 to give it a chance to recover.
Does my Red Maple need a specific soil type?
Red Maples prefer slightly acidic, well draining soil. Avoid heavy clay soils that hold too much water.

More problems with Red Maple

Back to the Red Maple guide

This article was generated with AI from the plant’s care profile and is general information, not horticultural advice. Read about how we build these guides.