Aeonium decorum f. variegata Fine Webbing - Causes & Fixes

Jump to cause: Two-Spotted Spider Mite (Tetranychus urticae) Pacific Red Spider Mite (Panonychus citri) High Humidity/Mold Growth

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Two-Spotted Spider Mite (Tetranychus urticae)

Spider mites thrive in the warm, dry conditions often favored by Aeoniums. They pierce the plant cells to feed, creating tiny white stippling and producing characteristic fine silk webbing across the rosette and leaf undersides.

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 out.

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1 Immediately spray the plant with an organic miticide to eliminate existing spider mite populations and destroy eggs.

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2 Increase humidity and reduce dry heat by misting the leaves or using a pebble tray to make the environment less hospitable for mites.

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3 Monitor soil moisture levels closely to ensure the plant is not becoming too dry, which triggers mite outbreaks.

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Pacific Red Spider Mite (Panonychus citri)

Similar to the two-spotted variety, these mites prefer the succulent leaves of Aeonium decorum. They create more subtle webbing that can make the variegated edges look dusty or discolored.

Common

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How to confirm: Inspect the underside of the leaves with a magnifying glass for small, moving orange or reddish dots.

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1 Isolate the plant immediately to prevent the mites from spreading to other succulents and spray the foliage thoroughly with an organic miticide to kill existing mites and eggs.

Bonide Captain Jack's Neem Oil 32 oz

0.9 L • 1 pcs • Organic

$10

In Stock

2 Gently wipe the leaves with a damp cloth to remove the fine webbing and dust-like residue, which helps the plant breathe and improves the appearance of the variegated edges.

3 Increase airflow around the plant and monitor soil moisture levels using a meter to ensure the environment does not become too stagnant or excessively humid, which can favor mite populations.

GROWIT Soil Moisture Meter - Blue

Water Meters

$12

In Stock

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High Humidity/Mold Growth

While less common as 'webbing,' extremely high humidity in stagnant air can cause fine fungal hyphae to appear like a web-like film on the succulent leaves.

Common

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How to confirm: Check if the 'webbing' feels fuzzy or organic rather than silken and look for dark spotting on the leaf margins.

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1 Improve air circulation around the plant to prevent stagnant, humid air from fostering fungal growth.

2 Apply an organic fungicide to treat the fungal hyphae and protect the leaves from further mold development.