Zantedeschia aethiopica (Purple) Fine Webbing - Causes & Fixes

Jump to cause: Two-Spotted Spider Mite Infestation Tetranychus urticae (European Red Spider Mite) Low Humidity Stress

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Two-Spotted Spider Mite Infestation

Spider mites thrive in the warm, dry conditions often experienced by Calla Lilies. They pierce the cell walls of the leaves to suck sap, leaving behind characteristic fine silk webbing and stippling patterns.

Very Common

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How to confirm: Hold a white piece of paper underneath 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 to kill existing spider mites and their eggs.

Bonide Captain Jack's Neem Oil 32 oz

0.9 L • 1 pcs • Organic

$10

In Stock

2 Increase humidity around the plant and wipe leaves with a damp cloth to physically remove webbing and disrupt the mites' environment.

Flora Premium Plant Mister

Spray Bottles

$12

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3 Monitor soil moisture levels to ensure the plant is not too dry, as dry conditions accelerate mite reproduction.

GROWIT Soil Moisture Meter SMM-V3

Water Meters

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Tetranychus urticae (European Red Spider Mite)

This specific mite species is highly prevalent in indoor Calla Lily cultivation. As the population grows, the webbing becomes denser, eventually covering the entire plant and causing foliage to turn yellow or bronze.

Very Common

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How to confirm: Inspect the undersides of the leaves for tiny red or orange moving specks.

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shopping_cart Recommended Products

1 Isolate the plant immediately and spray the foliage thoroughly with an organic insecticide to eliminate the spider mite population and destroy eggs.

Bonide Captain Jack's Neem Oil 32 oz

0.9 L • 1 pcs • Organic

$10

In Stock

2 Increase local humidity around the plant by using a fine mist spray, as spider mites thrive in dry indoor environments.

Flora Premium Plant Mister

Spray Bottles

$12

In Stock

3 Monitor soil moisture levels to ensure the plant is not under drought stress, which can weaken its defenses against pests.

GROWIT Soil Moisture Meter - Blue

Water Meters

$12

In Stock

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Low Humidity Stress

While not a direct cause of webbing, extremely low humidity can weaken the plant's cuticle, making it more susceptible to mite colonization and causing the plant to produce more silk as a micro-environment.

Common

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How to confirm: Use a hygrometer to check if your environment is consistently below 40% humidity.

build How to fix it

shopping_cart Recommended Products

1 Inspect the undersides of leaves for tiny moving dots or webs to confirm if spider mites have colonized the plant.

Bonide Captain Jack's Neem Oil 32 oz

0.9 L • 1 pcs • Organic

$10

In Stock

2 Increase ambient moisture around the plant by using a pebble tray or a fine misting spray to prevent further cuticle weakening.

Flora Premium Plant Mister