Savoy Cabbage Sonho F1 Fine Webbing - Causes & Fixes

Jump to cause: Two-Spotted Spider Mite Infestation Western Flower Thrips Infestation Extreme Low Humidity (Desiccation)

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Two-Spotted Spider Mite Infestation

Spider mites are the most common cause of fine silk webbing on brassicas like Savoy Cabbage. They feed on the leaf underside, piercing cells and leaving behind characteristic stippling (tiny white dots) alongside their webs.

Very Common

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

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shopping_cart Recommended Products

1 Apply an organic miticide or insecticide to the undersides of the leaves 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 humidity around the cabbage plant and ensure good airflow, as spider mites thrive in hot, dry conditions.

Flora Premium Plant Mister

Spray Bottles

$12

In Stock

3 Prune and carefully dispose of heavily infested or dead leaves to prevent the mites from spreading to healthy parts of the plant.

Fiskars 5/8" Bypass Pruning Shears

Cutting Tools

$13

In Stock

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Western Flower Thrips Infestation

While less known for heavy webbing, high populations of thrips can create silk-like structures near leaf edges or crevices in the cabbage head. They cause silvering and scarring on the Savoy Cabbage leaves as they feed.

Common

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How to confirm: Inspect the tight folds of the cabbage heart for very small, slender, yellowish insects moving rapidly.

build How to fix it

shopping_cart Recommended Products

1 Apply an organic insecticide to eliminate the thrips population and disrupt their life cycle.

Bonide Captain Jack's Neem Oil 32 oz

0.9 L • 1 pcs • Organic

$10

In Stock

2 Use yellow sticky traps to monitor and capture adult thrips moving through the cabbage leaves.

Super Ninja Fungus Gnat Traps - 30 Pack

30 pcs

$7

In Stock

3 Inspect the cabbage heads closely and remove any heavily infested or damaged outer leaves to prevent further spread.

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Extreme Low Humidity (Desiccation)

In very dry environments, the fine hairs (trichomes) on Savoy Cabbage leaves can trap dust and debris, which may visually resemble light webbing. This is often accompanied by curling leaf margins.

Common

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How to confirm: Check if the webbing disappears when lightly misting the plant with water or if the leaves feel brittle.

build How to fix it

shopping_cart Recommended Products

1 Increase ambient humidity around the cabbage to prevent leaf desiccation and curling.

Flora Premium Plant Mister

Spray Bottles

$12

In Stock

2 Monitor soil moisture levels closely to ensure the plant remains hydrated despite the dry air.