Rubus idaeus subsp. strigosus Fine Webbing - Causes & Fixes

Jump to cause: Two-Spotted Spider Mite (Tetranychus urticae) Red Spider Mite (Panonychus citri) European Redberry Mite (Phytoseiulus persimilis - Infestation stage)

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Two-Spotted Spider Mite (Tetranychus urticae)

These arachnids thrive in hot, dry conditions and feed on the underside of raspberry leaves, secreting silk that forms characteristic fine webbing. As they drain the plant's nutrients, you will notice stippling (tiny white/yellow dots) on the foliage.

Very Common

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

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shopping_cart Recommended Products

1 Apply an organic miticide or insecticide to the plant, ensuring you thoroughly coat the undersides of the leaves where the mites reside.

Bonide Captain Jack's Neem Oil 32 oz

0.9 L • 1 pcs • Organic

$10

In Stock

2 Increase humidity around the plant and ensure the soil remains consistently moist, as spider mites thrive in hot, dry environments.

PlanKKers Terracotta Watering Spikes (Set 6)

Terracotta

$17

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3 Physically remove visible webbing and mite clusters by wiping leaves with a damp cloth or using a strong stream of water.

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Red Spider Mite (Panonychus citri)

Common in raspberry canes during warmer months, these mites create fine webbing often concentrated around the leaf margins or newer growth. They cause a bronzing effect on the raspberry leaves as they feed.

Common

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How to confirm: Inspect the undersides of newer, tender leaves for small reddish-brown dots moving slowly.

build How to fix it

shopping_cart Recommended Products

1 Apply an organic miticide or insecticide spray to the raspberry canes to eliminate the spider 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 carefully dispose of heavily infested canes or leaves to prevent the webbing and mites from spreading to healthy parts of the plant.

3 Increase humidity around the plant by misting the foliage, as spider mites thrive in hot, dry conditions.

Flora Premium Plant Mister

Spray Bottles

$12

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European Redberry Mite (Phytoseiulus persimilis - Infestation stage)

While often predators, an imbalance in mite populations or high humidity can lead to visible silk structures in raspberry patches. This is usually accompanied by a breakdown of natural pest control in the microenvironment.

Common

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How to confirm: Check if the webbing is accompanied by much larger, predatory mites that are actively consuming smaller pests.

build How to fix it

shopping_cart Recommended Products

1 Apply an organic miticide or insecticide spray to eliminate the mite population and break the webbing cycle.

Bonide Captain Jack's Neem Oil 32 oz

0.9 L • 1 pcs • Organic

$10

In Stock

2 Increase airflow around the raspberry canes to reduce the high humidity that facilitates webbing formation.

3 Monitor soil moisture levels to ensure the microenvironment does not become overly damp, which can disrupt natural predator balances.