Zantedeschia Red Alert Fine Webbing - Causes & Fixes

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Two-Spotted Spider Mite Infestation

Spider mites thrive in the warm, dry conditions often experienced by Zantedeschia. They pierce the leaf cells of your Red Calla Lily to suck out nutrients, leaving behind fine silken webs and stippled white spots on the foliage.

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 specks fall off.

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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 foliage and ensure the soil stays consistently moist to create an environment less favorable to mite reproduction.

Flora Premium Plant Mister

Spray Bottles

$12

In Stock

3 Wipe down leaves with a damp cloth to physically remove webbing and stippled debris from the plant surface.

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Tetranychus urticae (European Red Spider Mite)

A specific subspecies of spider mite that is highly aggressive on ornamental bulbs like Calla Lilies. They create denser webbing as the population grows, which can eventually lead to complete leaf chlorosis and desiccation.

Common

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How to confirm: Inspect the undersides of the leaves for small reddish or orange dots which indicate a mature colony.

build How to fix it

shopping_cart Recommended Products

1 Apply an organic miticide/insecticide to the plant to eliminate the spider mite population and destroy existing webbing.

Bonide Captain Jack's Neem Oil 32 oz

0.9 L • 1 pcs • Organic

$10

In Stock

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

Flora Premium Plant Mister

Spray Bottles

$12

In Stock

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

GROWIT Soil Moisture Meter - Blue

Water Meters

$12

In Stock

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High Humidity/Fungal Webbing

In extremely high humidity without adequate airflow, certain fungal hyphae can occasionally resemble fine, misty webbing on the surface of the leaves. However, this is usually accompanied by slimy or soft spots rather than dry silk.

Common

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How to confirm: Check if the 'webbing' disappears when you wipe it with a damp cloth; fungal growth will likely leave residue or discoloration.

build How to fix it

shopping_cart Recommended Products

1 Improve air circulation around the plant by using a small fan or increasing spacing between plants to prevent moisture from settling on leaves.

2 Apply an organic fungicide to treat any fungal hyphae and protect the plant from further spread.