Zantedeschia Captain Signum Fine Webbing - Causes & Fixes

search Possible Causes

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Two-Spotted Spider Mite Infestation

The fine webbing is a classic sign of spider mites, which thrive in the warm, dry conditions often experienced by Calla Lilies. These pests pierce plant cells to suck out sap, causing stippling on the leaves.

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 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 disrupt the mites' dry environment.

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 exacerbate mite infestations.

GROWIT Soil Moisture Meter SMM-V3

Water Meters

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Tetranychus urticae (European Red Spider Mite) Outbreak

In greenhouse or indoor environments, these mites create dense silk webs to protect themselves and their eggs from predators. The webbing often congregates around the leaf undersides and stem junctions of the Captain Signum.

Very Common

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How to confirm: Inspect the underside of the leaves for tiny, moving red or yellowish dots near the web strands.

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shopping_cart Recommended Products

1 Apply an organic miticide/insecticide to the plant, ensuring you thoroughly spray the undersides of the leaves and stem junctions to reach the mites and their eggs.

Bonide Captain Jack's Neem Oil 32 oz

0.9 L • 1 pcs • Organic

$10

In Stock

2 Physically remove the visible webbing and mite populations by wiping the leaves with a damp cloth or using a strong stream of water.

3 Increase humidity around the plant and monitor soil moisture, as spider mites thrive in hot, dry conditions.

Flora Premium Plant Mister

Spray Bottles

$12

In Stock

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Extreme Low Humidity / Desiccation

While not a direct cause of webbing, extremely dry air can cause certain micro-fungi or dust to clump in silk-like patterns around the leaf edges. This is often accompanied by leaf tip browning in Zantedeschia.

Common

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How to confirm: Check if your indoor humidity levels have dropped below 40% and look for crispy, brown leaf margins.

build How to fix it

shopping_cart Recommended Products

1 Increase ambient humidity around the Calla Lily to prevent further leaf tip desiccation and prevent dust/micro-fungi from clumping.

Flora Premium Plant Mister

Spray Bottles

$12

In Stock

2 Gently wipe the leaves with a damp cloth to remove any silk-like dust or debris that has accumulated due to the dry air.

3 Monitor soil moisture levels closely to ensure the plant is not also suffering from underwatering, which can exacerbate dry-air symptoms.