Spider mites are extremely small and cannot be seen easily with the naked eye, but they can cause significant damage to plants. Infestations often go unnoticed until foliage begins to look dull, pale, or dusty.
Quick Spider Mite Tips
- Damage appears as pale or dusty-looking foliage
- Mites are usually found on the undersides of leaves
- Hot, dry weather encourages outbreaks
- Thorough spray coverage is critical
- Avoid spraying oils during high heat
How to Identify Spider Mites
The first sign of spider mites is often pale, stippled, or dirty-looking foliage. Because the mites are so small, a simple test can help confirm their presence.
- Hold a white piece of paper beneath the damaged foliage.
- Shake the plant firmly.
- Watch the specks that fall onto the paper.
- If the specks begin to move, spider mites are likely present.
Spider Mite Control Options
Spider mites are not insects, so products labeled for mites or soft-bodied pests work best. Good coverage—especially on the undersides of leaves—is essential.
- Bonide All Season Horticultural Oil
- Bonide Super Soap
- Ferti-lome Spinosad Soap
- Products containing bifenthrin may also provide control
Application Tips
- Spray thoroughly, focusing on the undersides of leaves.
- Avoid spraying during the heat of the day.
- Do not apply horticultural oils when temperatures exceed 90°F.
- Do not use horticultural oils on blue spruce.
Preventing Future Outbreaks
Spider mites thrive in hot, dry conditions. Reducing plant stress through proper watering and spacing can help limit future problems.
Please read and follow all label instructions when applying any pest control products.