Acer circinatum Fine Webbing - Causes & Fixes

Jump to cause: Spider Mites (Tetranychidae) Spotted Tent Caterpillar Spider Mite Damage from Environmental Stress

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Spider Mites (Tetranychidae)

Tiny arachnids feed on the sap of Acer circinatum leaves, secreting silk as they move and create fine webbing. This is often exacerbated by hot, dry conditions which stress the vine maple.

Very Common

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How to confirm: Tap a leaf over a white piece of paper to see if tiny crawling dots fall out.

build How to fix it

shopping_cart Recommended Products

1 Apply an organic miticide or insecticide spray to the foliage to eliminate existing spider mite populations and their 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 and ensure consistent moisture to make the environment less hospitable to mites.

Flora Premium Plant Mister

Spray Bottles

$12

In Stock

3 Prune and dispose of heavily infested or dead leaves to prevent the mites from spreading further throughout the maple canopy.

Fiskars 5/8" Bypass Pruning Shears

Cutting Tools

$13

In Stock

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Spotted Tent Caterpillar

The larvae of these caterpillars construct silk nests (tents) on branches and leaves to protect themselves while feeding. This can cause significant defoliation in young vine maple saplings.

Common

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How to confirm: Look for larger, more concentrated silken clusters on the undersides of branches rather than a thin film over whole leaves.

build How to fix it

shopping_cart Recommended Products

1 Manually remove and destroy the silk nests (tents) from the branches to disrupt the caterpillars' protection and feeding cycle.

2 Apply an organic insecticide spray to the affected foliage to target any remaining larvae and prevent further defoliation.

Bonide Captain Jack's Neem Oil 32 oz

0.9 L • 1 pcs • Organic

$10

In Stock

3 Monitor the plant closely for new webbing and use a targeted spray if the infestation persists.

Bonide Captain Jack's Deadbug Brew 16 oz

0.5 L • Organic

$15

In Stock

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Spider Mite Damage from Environmental Stress

While not a separate cause, extreme drought in vine maple can trigger a population explosion of existing mite colonies. The webbing becomes more apparent as the leaf tissue begins to chlorose and die.

Common

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How to confirm: Check the moisture level of the soil and the recent weather patterns for prolonged dry spells.

build How to fix it

shopping_cart Recommended Products

1 Apply an organic miticide 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 Monitor soil moisture levels closely to ensure the plant is not experiencing drought stress, which triggers mite outbreaks.