Pocket Botanist
Check these first
- Look for white dust on the leaves.
- Check if the plant is crowded by other vegetation.
- Inspect the undersides of the leaves for pests.
Likely causes
Powdery Mildew
Most likelyHow to tell: A white, dusty coating appears on the surface of the leaves.
What to do: Improve air circulation by thinning out crowded stems. Apply a neem oil spray or a mixture of water and baking soda to the affected leaves.
Fungal Leaf Spot
PossibleHow to tell: Dark or brown spots with yellow halos appear on the foliage.
What to do: Remove and dispose of the infected leaves to stop the spread. Avoid overhead watering to keep the leaves dry.
Find out what's wrong with your blue mistflower
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 spots cover more than half of the foliage, the plant will struggle to photosynthesize. A few isolated spots are common in humid weather.
Stopping it coming back
Space your plants properly to allow for good airflow and water at the base instead of over the leaves.
Blue Mistflower: spots? Check yours with a photo
Every plant is a little different. Take a photo of your blue mistflower 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
- Can I save leaves with spots?
- It is usually better to prune away heavily spotted leaves to prevent the fungus from spreading to healthy parts of the plant.
- Does humidity cause these spots?
- Yes, high humidity combined with poor airflow creates the perfect environment for fungal growth.
Guides to these causes
More problems with Blue Mistflower
- Why is my Blue Mistflower drooping?
- Why is my Blue Mistflower looking so leggy?
- Why is my Blue Mistflower not flowering?
- Why are my Blue Mistflower's leaves turning yellow?
- Why are my Blue Mistflower's leaf tips turning brown?
- Why is my Blue Mistflower dropping leaves?
- Are there bugs on my Blue Mistflower?
- How do I fix root rot on my Blue Mistflower?
Back to the Blue Mistflower 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.