Check these first
- Inspect the leaves for white, dusty patches.
- Look closely at the tips of the stems for tiny clusters of insects.
- Check if the plant has enough space for air to move around it.
Likely causes
Powdery Mildew
Most likelyHow to tell: You will see a white, dusty fungal growth on the leaves and stems. This often happens during periods of high humidity.
What to do: Improve air circulation around the plant by spacing it further from others. You can wipe the leaves with a mixture of 1 teaspoon of baking soda in a quart of water to neutralize the fungus.
Aphids
PossibleHow to tell: Tiny green or black insects cluster on the new growth and flower buds. They cause the leaves to curl or look distorted.
What to do: Spray the plant with a steady stream of water to knock them off. If they persist, use an insecticidal soap spray once a week until they are gone.
Find out what's wrong with your clasping venus looking glass
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 white mildew covers the entire plant and causes leaves to turn yellow or drop, it is serious. A few aphids are normal, but a full infestation requires immediate action.
Stopping it coming back
Keep the plant in a sunny, well ventilated area to prevent fungal growth. Avoid overhead watering that keeps the foliage wet for too long.
Clasping Venus looking glass: pests? Check yours with a photo
Every plant is a little different. Take a photo of your clasping venus looking glass 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
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Questions people ask
- Can I use neem oil on this plant?
- Yes, neem oil is effective for both mildew and aphids. Apply it in the evening to avoid burning the leaves in the sun.
- Why does my plant have white dust on it?
- That is likely powdery mildew caused by high humidity and poor airflow. It is a common fungal issue for this plant.
Guides to these causes
More problems with Clasping Venus looking glass
- Why is my Clasping Venus looking glass drooping?
- Why is my Clasping Venus looking glass getting leggy?
- Why are there spots on my Clasping Venus looking glass?
- Why are my Triodanis perfoliata leaves turning yellow?
- Why are my Triodanis perfoliata leaf tips turning brown?
- Why is my Triodanis perfoliata dropping leaves?
- Why is my Triodanis perfoliata not blooming?
- Is my Triodanis perfoliata suffering from root rot?
Back to the Clasping Venus looking glass 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.

