Brassica campestris Fine Webbing - Causes & Fixes

Jump to cause: Two-Spotted Spider Mite Infestation Edificated Thrips Infestation High Humidity/Mildew Micro-environment

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Two-Spotted Spider Mite Infestation

Spider mites thrive in warm, dry conditions common for Brassica crops. They pierce plant cells to feed on sap, leaving behind fine silken webs as they move across the leaf undersides and tops.

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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1 Apply an organic miticide to eliminate the spider mite population and destroy eggs, larvae, and adults.

Bonide Captain Jack's Neem Oil 32 oz

0.9 L • 1 pcs • Organic

$10

In Stock

2 Increase humidity and reduce heat around the plant to make the environment less hospitable for mite reproduction.

3 Use yellow sticky traps to capture adult mites and monitor for any new infestations.

Super Ninja Fungus Gnat Traps - 30 Pack

30 pcs

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In Stock

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Edificated Thrips Infestation

While thrips are primarily known for scarring, heavy infestations in young Brassica seedlings can produce silk-like webbing as they congregate and feed on the leaf tissue.

Common

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How to confirm: Look for small, silvery streaks or dark fecal spots alongside the webbing on the cabbage leaves.

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 Inspect the undersides of leaves for more webbing or larvae and physically remove visible pests.

3 Use yellow sticky traps to capture adult thrips and monitor for further infestation levels.

Super Ninja Fungus Gnat Traps - 30 Pack

30 pcs

$7

In Stock

warning

High Humidity/Mildew Micro-environment

In very dense Brassica plantings with poor airflow, high humidity can cause fungal hyphae to appear as fine, thread-like structures that mimic webbing.

Common

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How to confirm: Check if the 'webbing' is accompanied by white, powdery patches on the leaf surface characteristic of Downy Mildew.

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shopping_cart Recommended Products

1 Improve airflow around the plants by thinning out dense foliage and increasing the spacing between individual plants to reduce humidity pockets.

2 Apply an organic fungicide to treat the fungal hyphae and prevent the spread of mildew.