Pocket Botanist
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Check these first
- Inspect the stems and needles for small, stationary bumps.
- Look for fine webbing between the branches.
- Check if the foliage is turning yellow or losing its color.
Likely causes
Juniper scale
Most likelyHow to tell: You will see small, round, or oval bumps on the needles and stems that do not move. These insects cause the foliage to yellow and the plant to look stunted.
What to do: Apply horticultural oil or neem oil to the foliage during the dormant season or when crawlers are active in early summer. Ensure you coat the undersides of the needles thoroughly. Repeat the application after 14 days if you still see active insects.
Spider mites
PossibleHow to tell: This is less common for this plant, usually caused by hot and dry conditions that stress the tree. Look for fine webbing between the needles and a dusty, stippled appearance on the foliage.
What to do: Spray the foliage with a strong stream of water to dislodge the mites. Keep the plant well watered to reduce stress. If the infestation persists, use an insecticidal soap once a week for 3 weeks.
Find out what's wrong with your sawara cypress
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
Worry if the foliage begins to brown and drop in large sections. It is normal to see a few old needles turn brown inside the canopy as the tree grows.
Stopping it coming back
Keep your cypress healthy with consistent watering and proper spacing to ensure good airflow. Healthy trees are much better at resisting pest attacks.
Sawara cypress: pests? Check yours with a photo
Every plant is a little different. Take a photo of your sawara cypress 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.
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Questions people ask
- Can I just pick the scale off?
- You can scrape off individual scales, but it is rarely enough to clear an entire infestation. Chemical or oil treatments are much more effective for total control.
- Will these bugs kill my tree?
- A light infestation is usually manageable, but heavy scale populations can weaken the tree significantly over time. Treat them early to prevent long term damage.
Guides to these causes
More problems with Sawara cypress
Back to the Sawara cypress 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.