Pocket Botanist
Check these first
- Rub the white spots to see if they wipe off like dust.
- Check if the plant is crowded by other shrubs.
- Look for signs of poor drainage around the roots.
Likely causes
Powdery mildew
Most likelyHow to tell: The leaves look like they have been dusted with white powder. It often starts on the top of the leaves during late summer.
What to do: Prune out the most heavily infected branches to improve airflow. Apply a fungicide labeled for powdery mildew or a mixture of one tablespoon of baking soda in a gallon of water.
Leaf spot disease
PossibleHow to tell: These appear as distinct brown or black spots with yellow halos. They are usually caused by fungal spores splashing up from the soil.
What to do: Remove and dispose of any fallen leaves around the base of the plant. Water at the base of the shrub rather than overhead to keep the leaves dry.
Find out what's wrong with your snowberry
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
Powdery mildew is mostly a cosmetic issue and rarely kills the plant. You should only worry if the infection is so severe that the leaves turn yellow and drop prematurely.
Stopping it coming back
Plant your Snowberry in a spot with good air circulation and plenty of sunlight. Avoid overhead watering, especially in the evening when leaves stay wet longer.
Snowberry: spots? Check yours with a photo
Every plant is a little different. Take a photo of your snowberry 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
- Is powdery mildew contagious to other plants?
- Yes, the spores can spread to other susceptible plants in your garden. Keep an eye on nearby shrubs and treat them if you see the same white spots.
- Should I cut off all the spotted leaves?
- If only a few leaves are affected, you can remove them. If the whole plant is covered, focus on improving airflow and using a fungicide instead.
Guides to these causes
More problems with Snowberry
- Why are there bugs on my Snowberry?
- Why is my Snowberry drooping?
- Why are my snowberry's leaves turning yellow?
- Why are my snowberry's leaf tips turning brown?
- Why is my snowberry losing its leaves?
- Why is my snowberry showing signs of root rot?
- Why is my snowberry looking leggy and sparse?
- Why are my snowberry leaves curling up?
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.