Echeveria agavoides Ebony Fine Webbing - Causes & Fixes

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Two-Spotted Spider Mite Infestation

Spider mites are common pests for Echeveria that thrive in hot, dry conditions. They pierce the succulent leaves to suck out cell contents, leaving behind characteristic fine silk webbing and stippling.

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 dots fall onto the paper.

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

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

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3 Carefully wipe the leaves with a damp cloth to physically remove webbing and any remaining pest populations.

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Tetranychus urticae (European Red Spider Mite)

A specific subtype of spider mite that is particularly aggressive on Agavoides varieties. The webbing often becomes denser around the leaf axils and base of the rosette as the population grows.

Very Common

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How to confirm: Inspect the underside of the leaves closely for tiny reddish or yellowish dots moving across the surface.

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1 Isolate the plant immediately to prevent the mites from spreading to other houseplants and spray the leaves thoroughly with an organic miticide.

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2 Use a soft brush or damp cloth to gently wipe away the visible webbing and any remaining mite eggs from the leaf axils and rosette base.

3 Increase humidity around the plant and ensure the soil is not overly dry, as spider mites thrive in hot, arid conditions.

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High Humidity/Mold Hyphae

While rare, extremely high humidity in stagnant air can sometimes cause fungal filaments that mimic fine webbing. However, this is usually accompanied by soft, translucent spots on the Echeveria leaves.

Common

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How to confirm: Check if the 'webbing' feels sticky or organic versus dry and silken, and look for signs of leaf rot.

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1 Increase airflow around the plant by using a small fan or moving it to a more ventilated area to prevent fungal filaments from developing in stagnant air.

2 Apply an organic fungicide to treat any potential fungal growth and protect the plant from further mold development.

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3 Monitor the soil moisture levels closely to ensure the substrate is not staying too wet, which can contribute to high humidity around the base of the plant.