Zantedeschia aethiopica Fine Webbing
eco Fine Webbing

Zantedeschia aethiopica – Fine Webbing

Why does your Zantedeschia aethiopica have fine webbing? Diagnose the cause and fix it with our step-by-step guide.

search Possible Causes

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Spider Mites (Tetranychidae)

The fine webbing is a classic hallmark of spider mite infestations, which thrive in the warm, dry conditions often experienced by Calla Lilies. These microscopic arachnids pierce plant cells to suck out sap, leading to stippling on the leaves and eventual chlorosis.

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 eliminate existing spider mite populations and eggs.
2 Increase humidity around the Calla Lily and wipe leaves with a damp cloth to physically remove webbing and disrupt the mites' habitat.
3 Monitor soil moisture levels to ensure the environment does not become too dry, as low humidity encourages mite outbreaks.
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Two-Spotted Spider Mite (Tetranychus urticae) Colony Expansion

If the webbing is dense and covers large areas of the foliage, it indicates an established colony that has moved from individual leaf feeding to creating protective silk structures. This often occurs when Calla Lily humidity levels drop too low.

Very Common
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How to confirm: Inspect the undersides of the leaves specifically for small, yellowish dots (stippling) beneath the webbing.
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1 Apply an organic insecticide spray to eliminate the spider mite colony and destroy any remaining eggs or larvae.
2 Increase ambient humidity around the foliage to make the environment less hospitable for spider mite expansion.
3 Gently wipe the leaves with a damp cloth to physically remove webbing and dust, then monitor soil moisture with a meter to ensure consistent hydration.
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Cheesecake/Clingy Dust and High Humidity Mold

In extremely high humidity environments with poor air circulation, fine fungal filaments or dust trapped in moisture can sometimes mimic a web-like appearance on the thick, waxy leaves of the Calla Lily.

Common
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How to confirm: Wipe a section of the 'webbing' with a damp cloth; if it disappears easily without leaving residue, it is likely debris rather than mite silk.
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1 Increase air circulation around the plant by using a small fan to prevent moisture from settling on the waxy leaves.
2 Gently wipe the leaves with a soft, damp cloth to remove trapped dust and fungal filaments.
3 Reduce ambient humidity levels and ensure the plant is not in a stagnant, overly damp environment.

Other Zantedeschia aethiopica problems

Your plant might also be experiencing one of these issues:

local_hospital All symptoms eco All plants with fine webbing
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