Kalanchoe Passion Amora White Cottony Spots - Causes & Fixes

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

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Mealybugs

These small, sap-sucking insects produce a white, waxy, cottony secretion to protect themselves. They cluster in the crevices of the Kalanchoe's thick leaves and stems, draining the plant's energy.

Very Common

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How to confirm: Inspect the undersides of leaves and leaf axils for tiny moving white insects or sticky residue.

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

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

3 Apply an organic insecticide spray to the entire plant to eliminate remaining insects and larvae.

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Powdery Mildew

This fungal disease manifests as a white, flour-like coating on the leaf surfaces. It thrives in Kalanchoe environments with high humidity and poor air circulation around the foliage.

Common

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How to confirm: Check if the white spots appear as a flat, powdery film that can be rubbed off with your finger.

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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 your Kalanchoe by spacing plants further apart and avoid overhead watering to keep foliage dry.

3 Prune and dispose of any heavily infected leaves to reduce the fungal load on the plant.

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Cottony Blight (Botrytis)

In high-moisture conditions, Botrytis can cause greyish-white fuzzy patches on decaying plant tissue. It often starts on older leaves or flower buds of the Kalanchoe before spreading.

Common

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How to confirm: Look for soft, rotting spots on the stems or flowers accompanying the white fuzziness.

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shopping_cart Recommended Products

1 Prune and remove all affected leaves and flower buds immediately to prevent the fungus from spreading to healthy tissue.

2 Apply an organic fungicide to protect remaining healthy areas and treat the existing infection.

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 by ensuring the soil surface dries out between waterings.