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Savoy Cabbage Convoy F1 White Cottony Spots
eco White Cottony Spots

Savoy Cabbage Convoy F1 – White Cottony Spots

Why does your Savoy Cabbage Convoy F1 have white cottony spots? Diagnose the cause and fix it with our step-by-step guide.

yard View full Savoy Cabbage Convoy F1 care guide
Jump to cause: Powdery Mildew Mealybug Infestation Sclerotinia (White Mold)

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Powdery Mildew

This fungal disease manifests as white, flour-like patches on the crinkled leaves of Savoy cabbage. It thrives in high humidity and moderate temperatures, often colonizing the textured surface of the Savoy variety.

Very Common
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How to confirm: Look for circular white spots that can be rubbed off easily with your finger but may leave a lesion behind.
build How to fix it
shopping_cart Recommended Products
1 Apply an organic fungicide to eliminate existing fungal patches and prevent further spread across the cabbage leaves.
Bonide Captain Jack's Copper Fungicide 32 oz
Bonide Captain Jack's Copper Fungicide 32 oz
0.9 L • 1 pcs • Organic
$12
In Stock
2 Improve air circulation around the plants and reduce humidity by spacing them properly to create a drier environment.
3 Remove and dispose of heavily infected leaves immediately to prevent the spores from contaminating healthy parts of the plant.
warning

Mealybug Infestation

Mealybugs are small insects covered in a white, waxy, cottony secretion that protects them from predators. They cluster in the crevices of the Savoy cabbage leaves to suck sap, causing plant stress.

Common
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How to confirm: Inspect the undersides of leaves and the leaf axils for tiny, slow-moving white insects.
build How to fix it
shopping_cart Recommended Products
1 Apply an organic insecticide to eliminate the mealybug population and destroy the protective waxy coating.
Bonide Captain Jack's Neem Oil 32 oz
Bonide Captain Jack's Neem Oil 32 oz
0.9 L • 1 pcs • Organic
$10
In Stock
2 Use yellow sticky traps to capture adult insects and prevent further infestation spread.
Super Ninja Fungus Gnat Traps - 30 Pack
Super Ninja Fungus Gnat Traps - 30 Pack
30 pcs
$7
In Stock
3 Manually remove visible clusters of insects from leaf crevices using a cotton swab dipped in rubbing alcohol.
warning

Sclerotinia (White Mold)

This soil-borne fungus produces a thick, white, cottony mycelium that can envelop the base and leaves of the cabbage plant. It can lead to rapid stem decay and plant death in damp conditions.

Common
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How to confirm: Check if the white patches are accompanied by soft, water-soaked tissue or dark sclerotia (small black structures) near the base.
build How to fix it
shopping_cart Recommended Products
1 Remove and destroy all infected plant material and debris from the area to prevent the fungus from spreading to healthy plants.
2 Apply an organic fungicide to control the spread of the white mold and protect the remaining healthy tissue.
Bonide Captain Jack's Copper Fungicide 32 oz
Bonide Captain Jack's Copper Fungicide 32 oz
0.9 L • 1 pcs • Organic
$12
In Stock
3 Improve air circulation around the cabbage and avoid overhead watering to ensure the soil and foliage stay dry, reducing the damp conditions the fungus thrives in.

Other Savoy Cabbage Convoy F1 problems

Your plant might also be experiencing one of these issues:

eco Yellow Leaves chevron_right
eco Brown Leaf Tips chevron_right
eco Drooping Leaves chevron_right
eco Fine Webbing chevron_right
eco White Powder chevron_right
local_hospital All symptoms eco All plants with white cottony spots
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