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Haworthia cymbiformis White Cottony Spots
eco White Cottony Spots

Haworthia cymbiformis – White Cottony Spots

Why does your Haworthia cymbiformis have white cottony spots? Diagnose the cause and fix it with our step-by-step guide.

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Jump to cause: Mealybugs Powdery Mildew Cottony Blight (Sclerotinia)

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Mealybugs

These small insects secrete a white, waxy, cotton-like substance to protect themselves. In Haworthia cymbiformis, they often hide in the crevices between leaves or near the base of the plant.

Very Common
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How to confirm: Use a toothpick to probe the white spots; if they move or reveal tiny insect bodies underneath, it is mealybugs.
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1 Isolate the plant immediately to prevent the mealybugs from spreading to other houseplants.
2 Carefully remove visible insects using a cotton swab dipped in isopropyl alcohol, then spray the plant thoroughly with an organic insecticide to kill remaining pests and larvae.
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
3 Monitor the soil moisture levels to ensure the plant is not overly damp, as high humidity can encourage pest resurgence.
GROWIT Soil Moisture Meter - Blue
GROWIT Soil Moisture Meter - Blue
Water Meters
$12
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Powdery Mildew

This fungal pathogen creates a white, flour-like coating on leaf surfaces. While less common in succulents than in leafy plants, high humidity and poor airflow around the Haworthia can trigger outbreaks.

Common
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How to confirm: Check if the white spots can be wiped off easily with a damp cloth without damaging the underlying leaf tissue.
build How to fix it
shopping_cart Recommended Products
1 Treat the affected leaves immediately with an organic fungicide to stop the spread of the fungal spores.
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 Improve air circulation around the plant and reduce humidity by avoiding overhead watering and ensuring the plant is not crowded.
3 Gently wipe away visible white spots with a soft cloth and remove any heavily infected leaves to prevent further contamination.
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Cottony Blight (Sclerotinia)

This is a fungal disease that produces white, fuzzy mycelium that can appear to consume the plant tissue. In Haworthia, this usually manifests as soft, decaying spots covered in white fuzz.

Common
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How to confirm: Inspect the base of the leaves for any signs of mushy, water-soaked rot accompanying the white fuzz.
build How to fix it
shopping_cart Recommended Products
1 Immediately remove and discard any heavily infected or decaying plant tissue to prevent the fungus from spreading to healthy parts of the Haworthia.
2 Apply an organic fungicide to the affected area to control the spread of the fungal mycelium.
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 plant and reduce humidity to create an environment less conducive to fungal growth.
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