Echeveria onslow Fine Webbing - Causes & Fixes

Jump to cause: Two-Spotted Spider Mite Infestation Cheyletiid Mites (Clawing Mites) High Humidity/Fungal Hyphae

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Two-Spotted Spider Mite Infestation

Spider mites thrive in the warm, dry conditions typical for Echeveria. They pierce the succulent leaves to suck out nutrients, leaving behind fine silk webbing as they build colonies.

Very Common

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

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1 Isolate the plant immediately to prevent the mites from spreading to other houseplants.

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 Increase humidity and reduce heat by misting the plant or using a pebble tray to create an environment less favorable to spider mites.

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Cheyletiid Mites (Clawing Mites)

These mites can create silk-like structures and are often found on the undersides of fleshy succulent leaves. They inhabit the crevices between the rosette petals in Echeveria species.

Common

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How to confirm: Use a magnifying glass to inspect the tight crevices at the base of the leaf rosette for moving micro-organisms.

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1 Thoroughly inspect the undersides of leaves and crevices for mites, then spray the plant with an organic insecticide/miticide to eliminate the infestation.

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

3 Isolate the affected Echeveria from other plants to prevent the mites from spreading through the fine webbing.

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High Humidity/Fungal Hyphae

In extremely high humidity with poor airflow, certain fungal structures can occasionally appear as fine, hair-like filaments. This is less common for Echeveria but can occur if the plant is kept in a closed terrarium.

Rare

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How to confirm: Check if the 'webbing' is accompanied by dark spotting or mushy leaf tissue indicating rot.

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1 Improve airflow around the plant by moving it out of closed containers and ensuring good ventilation to reduce humidity levels.

2 Gently wipe the leaves with a clean, dry cloth to remove any visible fungal filaments or webbing.

3 Apply an organic fungicide spray to protect the plant from further fungal development.

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