Echeveria derenbergii Fine Webbing - Causes & Fixes

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Spider Mites (Tetranychidae)

The presence of fine webbing on succulent leaves is a hallmark sign of spider mite infestations. These microscopic pests pierce the cells of the Echeveria leaves to feed, causing stippling and eventual leaf drop.

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 moving specks fall onto the paper.

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1 Isolate the plant immediately from other greenery to prevent the mites from spreading to your entire collection.

2 Apply an organic miticide spray to the plant, ensuring you coat both the upper and lower surfaces of the leaves to kill mites and eggs.

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

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Cheyletiid Mites (Walking Dandruff Mites)

While less common than spider mites, these larger mites can create a dusty or web-like appearance on the rosette. They thrive in warmer, drier conditions often found in indoor Echeveria environments.

Common

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How to confirm: Inspect the undersides of the leaves for larger, crawling white specks that move much faster than spider mites.

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1 Treat the plant with an organic insecticide/miticide spray to eliminate the mites and any remaining eggs on the leaves.

Bonide Captain Jack's Neem Oil 32 oz

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$10

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2 Increase humidity and reduce dry heat around the plant to make the environment less hospitable for mite reproduction.

3 Gently wipe the leaves with a damp cloth to physically remove the webbing and dust-like mite debris.

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High Humidity/Fungal Mycelium

In rare cases of extreme humidity without airflow, certain fungal species can produce fine, thread-like mycelia that may resemble webbing. However, this is usually accompanied by soft, rotting tissue rather than just webs.

Rare

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How to confirm: Check if the 'webbing' is actually part of a fuzzy growth originating from a soft or discolored spot on the leaf base.

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1 Inspect the plant closely for tiny moving dots to confirm if the webbing is actually Spider Mites, which are much more common than fungal mycelium.

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2 Increase airflow around the Echeveria by using a small fan and reduce humidity levels to prevent fungal growth and mite proliferation.

3 Ensure the plant is in a well-draining medium with added perlite to prevent the soft, rotting tissue associated with high humidity.