Pocket Botanist
Check these first
- Inspect the soil surface for standing water or a foul odor.
- Dig down 3 inches to feel if the soil is muddy or just damp.
- Examine the roots for mushy texture or dark discoloration.
Likely causes
Poor soil drainage
Most likelyHow to tell: The soil feels soggy or swampy for days after watering, and the foliage may look wilted despite the wet ground. You might notice a sour smell coming from the base of the tree.
What to do: Improve the soil structure by mixing in organic matter like compost to help water move away from the roots. If the tree is in a container, ensure there are multiple drainage holes and use a well draining potting mix.
Overwatering
PossibleHow to tell: The leaves turn yellow or brown and drop prematurely while the soil remains constantly saturated. The roots will appear mushy, dark, or black instead of firm and white.
What to do: Adjust your watering schedule to allow the top 2 inches of soil to dry out slightly before adding more water. Ensure you are watering every 3 to 7 days depending on the current temperature and humidity.
Find out what's wrong with your grey alder
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.
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When to worry
If the entire tree is wilting and the leaves are dropping rapidly, the root system is likely severely compromised. It is normal for a few lower leaves to drop during the transition to a new planting site.
Stopping it coming back
Always plant your grey alder in a spot with good drainage and avoid letting it sit in a pool of water for extended periods.
Keep your grey alder 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.
Questions people ask
- Can I save a tree with root rot?
- If you catch it early, you can improve drainage and reduce watering to help the roots recover. If the rot has spread to the main trunk, the tree may not be salvageable.
- How often should I water my grey alder?
- Aim to water every 3 to 7 days, keeping the soil consistently damp but never waterlogged. Adjust this frequency based on the weather and how quickly the soil dries out.
More problems with Grey alder
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.