Rhododendron hirsutum Fine Webbing - Causes & Fixes

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Spider Mites (Tetranychidae)

Spider mites thrive in the warm, dry conditions often experienced by Rhododendron hirsutum. They pierce the leaf cells to feed on sap, leaving behind fine silken webs and causing stippling or chlorosis.

Very Common

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How to confirm: Hold a white piece of paper under a leaf and tap it to see if tiny crawling specks fall onto the paper.

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1 Apply an organic miticide to eliminate existing spider mite populations and kill eggs, larvae, and adults.

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2 Increase humidity around the plant and ensure the soil remains consistently moist to create an environment less favorable to mite reproduction.

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3 Gently wipe the leaves with a damp cloth to physically remove webbing and any remaining mites from the foliage.

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Western Flower Mites

These microscopic mites can inhabit the hairy texture of Rhododendron hirsutum leaves, creating fine webbing as they move and feed. Their presence often leads to a dusty appearance on the foliage.

Common

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How to confirm: Inspect the underside of the leaves with a magnifying glass for tiny moving dots within the web.

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shopping_cart Recommended Products

1 Apply an organic miticide to eliminate the mites and destroy their eggs, ensuring you spray the undersides of the leaves where they hide.

Bonide Captain Jack's Neem Oil 32 oz

0.9 L • 1 pcs • Organic

$10

In Stock

2 Gently wipe the foliage with a damp cloth to remove the dusty residue and physical webbing caused by the mites.

3 Increase humidity around the plant, as mites thrive in dry conditions; consider using a fine mist spray.

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Thrips Infestation

While thrips do not produce webs themselves, their feeding damage can sometimes lead to secondary fungal growth or silken structures from associated pests in a highly stressed plant environment.

Common

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How to confirm: Look for small, irregular silvery streaks on the leaf surface along with tiny black fecal spots.

build How to fix it

shopping_cart Recommended Products

1 Inspect the plant closely for tiny, slender insects and apply an organic insecticide to eliminate the thrips and any secondary pests.

Bonide Captain Jack's Neem Oil 32 oz

0.9 L • 1 pcs • Organic

$10

In Stock

2 Prune away any heavily damaged or silken leaves to prevent the spread of secondary fungal growth and reduce the pest habitat.

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