Kalanchoe Passion Notus White Cottony Spots - Causes & Fixes

Jump to cause: Mealybugs Powdery Mildew Cottony Scale

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Mealybugs

These small, sap-sucking insects produce a white, waxy, cottony secretion to protect themselves. They tend to cluster in the crevices of Kalanchoe leaves and stems, feeding on the plant's juices and causing leaf yellowing.

Very Common

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How to confirm: Use a cotton swab dipped in rubbing alcohol to dab the spots; if they dissolve and reveal small insects underneath, it is mealybugs.

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1 Isolate the plant immediately to prevent the mealybugs from spreading to other houseplants.

2 Treat the infestation by spraying the plant with an organic insecticide or neem oil to kill the insects and their waxy coating.

Bonide Captain Jack's Neem Oil 32 oz

0.9 L • 1 pcs • Organic

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3 Use a cotton swab dipped in rubbing alcohol to manually remove visible white cottony clusters from leaf crevices and stems.

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Powdery Mildew

This fungal disease manifests as white, flour-like patches on the leaf surfaces, particularly in humid environments with poor air circulation. It can cause the succulent leaves of Kalanchoe to become distorted or scorched.

Common

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How to confirm: Check if the white spots can be wiped off easily with your finger and if they appear more like a dusty coating than distinct clumps.

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1 Apply an organic fungicide to the affected leaves to eliminate the powdery mildew spores and prevent further spread.

Bonide Captain Jack's Copper Fungicide 32 oz

0.9 L • 1 pcs • Organic

$12

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2 Improve air circulation around the plant and reduce humidity to create an environment less hospitable to fungal growth.

3 Prune and dispose of any heavily infected leaves to prevent the fungus from spreading to healthy parts of the Kalanchoe.

Fiskars 5/8" Bypass Pruning Shears

Cutting Tools

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Cottony Scale

Certain types of scale insects produce a white, fluffy appearance that mimics cotton. These pests embed themselves into the succulent tissue of the Kalanchoe, leading to weakened growth and potential stem dieback.

Common

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How to confirm: Gently scrape one of the white spots with your fingernail to see if there is a hard-bodied insect beneath the fluff.

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shopping_cart Recommended Products

1 Isolate the plant immediately to prevent the spread of scale insects to other houseplants.

2 Carefully remove visible white cottony spots using a cotton swab dipped in isopropyl alcohol to kill the insects on contact.

3 Apply an organic insecticide spray to the entire plant to target any remaining pests and larvae.

Bonide Captain Jack's Neem Oil 32 oz

0.9 L • 1 pcs • Organic

$10

In Stock