Chrysanthemum Derlei Dark Fine Webbing - Causes & Fixes

Jump to cause: Two-Spotted Spider Mite (Tetranychus urticae) Southern Yellow Stickiness (Milky Spider Mite) Broad Mites (Polyphagotarsonemus latus)

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Two-Spotted Spider Mite (Tetranychus urticae)

Spider mites thrive in the warm, dry conditions often experienced by Chrysanthemums, feeding on the underside of leaves and secreting silk. The fine webbing is a classic sign of a high-density infestation attempting to create a protective microclimate.

Very Common

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

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1 Immediately spray the plant with an organic miticide to kill existing mites and larvae.

Bonide Captain Jack's Neem Oil 32 oz

0.9 L • 1 pcs • Organic

$10

In Stock

2 Increase humidity around the plant and wipe the undersides of leaves with a damp cloth to physically remove webbing and disrupt the mite microclimate.

3 Monitor soil moisture levels to ensure the environment does not become too dry, as dry conditions accelerate mite reproduction.

GROWIT Soil Moisture Meter - Blue

Water Meters

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Southern Yellow Stickiness (Milky Spider Mite)

Similar to the two-spotted variety, these mites produce fine silk webs across the foliage of Chrysanthemums. They are particularly prevalent in indoor environments with low humidity.

Common

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How to confirm: Inspect the undersides of older leaves for tiny, pale yellow dots which indicate feeding sites.

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shopping_cart Recommended Products

1 Apply an organic miticide/insecticide spray to the foliage to eliminate the spider mites 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 to make the environment less hospitable for mite reproduction.

Flora Premium Plant Mister

Spray Bottles

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3 Gently wipe the leaves with a damp cloth to physically remove the fine webbing and any remaining pests.

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Broad Mites (Polyphagotarsonemus latus)

While less likely to produce heavy webbing than spider mites, broad mite damage can sometimes be accompanied by fine silken threads near new growth. This results in stunted, distorted, or 'bronzed' looking leaves on the Chrysanthemum.

Common

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How to confirm: Examine the newest, most tender growth for curling or puckering of the leaf margins.

build How to fix it

shopping_cart Recommended Products

1 Apply an organic insecticide spray to the plant, ensuring you coat the undersides of leaves and new growth to eliminate mites and larvae.

Bonide Captain Jack's Neem Oil 32 oz

0.9 L • 1 pcs • Organic

$10

In Stock

2 Prune and dispose of any heavily distorted or stunted leaves to reduce the mite population and prevent further spread.

3 Monitor the plant closely using yellow sticky traps to catch any remaining adult mites or other small pests.