Acer tegmentosum Fine Webbing - Causes & Fixes

Jump to cause: Two-Spotted Spider Mite (Tetranychus urticae) European Red Mite (Panonychus ulmi) Spider Mite Infestation due to Environmental Stress

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Two-Spotted Spider Mite (Tetranychus urticae)

These microscopic arachnids pierce the leaf cells of the Manchurian Maple to suck out nutrients, leaving behind fine silk webbing and characteristic stippling (small yellow dots) on the foliage. They thrive in hot, dry conditions which are common for this species during summer.

Very Common

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How to confirm: Tap a leaf over a white piece of paper; if tiny crawling specks fall off, you have spider mites.

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shopping_cart Recommended Products

1 Immediately spray the maple foliage with an organic insecticide to eliminate the spider mite population and destroy eggs.

Bonide Captain Jack's Neem Oil 32 oz

0.9 L • 1 pcs • Organic

$10

In Stock

2 Increase local humidity around the plant by misting the leaves regularly, as spider mites thrive in hot, dry environments.

Flora Premium Plant Mister

Spray Bottles

$12

In Stock

3 Check the soil moisture levels to ensure the plant is not under drought stress, which can make it more susceptible to infestations.

GROWIT Soil Moisture Meter SMM-V3

Water Meters

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European Red Mite (Panonychus ulmi)

Common on Acer species, these mites produce fine webbing that can be more subtle than two-spotted varieties. They often target the underside of leaves and can cause premature leaf drop in Manchurian Maples.

Common

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How to confirm: Inspect the undersides of leaves for very small, slow-moving reddish or orange dots.

build How to fix it

shopping_cart Recommended Products

1 Apply an organic miticide or insecticide spray to the undersides of the leaves to eliminate the mite population and destroy any remaining eggs.

Bonide Captain Jack's Neem Oil 32 oz

0.9 L • 1 pcs • Organic

$10

In Stock

2 Prune and dispose of heavily infested or dead foliage to reduce the mite's habitat and prevent the spread to healthy branches.

Fiskars 5/8" Bypass Pruning Shears

Cutting Tools

$13

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3 Increase humidity around the maple by misting the leaves regularly, as mites thrive in dry, hot conditions.

Flora Premium Plant Mister

Spray Bottles

$12

In Stock

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Spider Mite Infestation due to Environmental Stress

While not a different species, extreme drought stress in Acer tegmentosum weakens the tree's natural defenses and triggers rapid webbing production by existing mite populations. The lack of moisture causes the maple's leaves to become more susceptible to puncture.

Common

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How to confirm: Check the soil moisture levels and look for signs of leaf wilting alongside the webbing.

build How to fix it

shopping_cart Recommended Products

1 Apply an organic insecticide to eliminate the spider mite population and destroy existing webbing.

Bonide Captain Jack's Neem Oil 32 oz

0.9 L • 1 pcs • Organic

$10

In Stock

2 Increase soil moisture levels and monitor closely to prevent the drought stress that triggers mite activity.