Savoy Cabbage Convoy F1 Fine Webbing - Causes & Fixes

Jump to cause: Two-Spotted Spider Mite Infestation Edible Webworm or Diamondback Moth Larvae Extreme Environmental Desiccation

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Two-Spotted Spider Mite Infestation

Spider mites thrive in the warm, dry conditions often experienced by brassicas like Savoy cabbage. They pierce plant cells to feed, leaving behind fine silk webbing as they create colonies on the undersides of leaves.

Very Common

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How to confirm: Hold a white piece of paper under a leaf and tap it to see if tiny crawling specks fall off.

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shopping_cart Recommended Products

1 Immediately spray the undersides of the cabbage leaves with an organic miticide 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 and ensure the soil remains consistently moist, as spider mites thrive in hot, dry environments.

Flora Premium Plant Mister

Spray Bottles

$12

In Stock

3 Monitor the soil moisture levels regularly using a moisture meter to prevent the dry conditions that trigger mite outbreaks.

GROWIT Soil Moisture Meter SMM-V3

Water Meters

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Edible Webworm or Diamondback Moth Larvae

Certain lepidopteran larvae produce silk webbing while moving between cabbage leaves to protect themselves from predators. This webbing often accompanies visible feeding damage or holes in the Savoy leaf structure.

Common

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How to confirm: Gently pull apart the webbing to look for small, green caterpillars hiding near the leaf veins.

build How to fix it

shopping_cart Recommended Products

1 Apply an organic insecticide to eliminate the larvae and destroy any remaining eggs or webbing.

Bonide Captain Jack's Neem Oil 32 oz

0.9 L • 1 pcs • Organic

$10

In Stock

2 Manually inspect the cabbage leaves and remove any visible caterpillars or large clusters of webbing to reduce the infestation.

3 Monitor the plant closely using yellow sticky traps to capture adult moths before they can lay more eggs.

Super Ninja Fungus Gnat Traps - 30 Pack

30 pcs

$7

In Stock

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Extreme Environmental Desiccation

In very low humidity, the micro-climate within the crinkled folds of Savoy cabbage leaves can trap dust and plant debris, which may appear as a fine, web-like residue. This is often accompanied by curling leaf margins.

Common

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How to confirm: Check if the webbing disappears after a light misting or if the leaf edges feel brittle and dry.

build How to fix it

shopping_cart Recommended Products

1 Increase local humidity around the cabbage leaves to prevent further desiccation and leaf curling.

Flora Premium Plant Mister

Spray Bottles

$12

In Stock

2 Gently wipe the crinkled leaves with a soft, damp cloth to remove trapped dust and debris that mimics webbing.

3 Monitor soil moisture levels closely to ensure the plant remains hydrated during low-humidity periods.