Kalanchoe Passion Hera White Cottony Spots - Causes & Fixes

Jump to cause: Mealybugs Cottony Scale Botrytis cinerea (Gray Mold)

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Mealybugs

These small, soft-bodied insects produce a white, waxy, cottony secretion to protect themselves. They feed on the sap of Kalanchoe Passion Hera, often clustering in the crevices between the succulent leaves and stems.

Very Common

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How to confirm: Use a magnifying glass or smartphone zoom to check if the white spots move or are attached to stem nodes.

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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, ensuring you coat the undersides of leaves and stem joints to eliminate any remaining pests.

Bonide Captain Jack's Neem Oil 32 oz

0.9 L • 1 pcs • Organic

$10

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Cottony Scale

Similar to mealybugs, these pests create a white, felt-like coating over the plant surface. They can cause the leaves of Kalanchoe to yellow and drop if the infestation becomes widespread.

Common

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How to confirm: Gently scrape a spot with a fingernail to see if there is a hard insect body underneath the white fuzz.

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1 Isolate the plant immediately to prevent the spread of scale to other houseplants and use a cotton swab dipped in isopropyl alcohol to manually remove the white cottony spots.

2 Apply an organic insecticide spray to the entire plant, ensuring you coat the undersides of leaves and crevices where pests hide.

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 overwatered, as excess moisture can stress the plant and make it more susceptible to infestations.

GROWIT Soil Moisture Meter - Blue

Water Meters

$12

In Stock

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Botrytis cinerea (Gray Mold)

In high humidity environments, this fungus can manifest as fuzzy growth on succulent tissue. While it often appears gray, early stages or specific cultivars may show white, fuzzy patches on decaying leaf edges.

Common

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How to confirm: Check if the white spots are accompanied by soft, mushy, or decaying plant tissue.

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

2 Apply an organic fungicide to the plant to control the spread of the mold and protect remaining healthy foliage.