Echeveria strictiflora nova White Cottony Spots - Causes & Fixes

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

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Mealybugs

These small insects produce a white, waxy, cotton-like secretion to protect themselves while feeding on the succulent's sap. They often hide in the tight crevices between the Echeveria leaves and at the base of the rosette.

Very Common

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How to confirm: Use a cotton swab dipped in rubbing alcohol to dab the spots; if they dissolve instantly, it is likely mealybugs.

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1 Isolate the plant immediately to prevent the mealybugs from spreading to other succulents in your collection.

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

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

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Powdery Mildew

A fungal pathogen that manifests as white, flour-like patches on the leaf surfaces, often appearing when air circulation is poor. In Echeveria, this can eventually lead to leaf spotting or rot if moisture remains trapped in the rosette.

Common

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How to confirm: Check if the white spots are superficial and can be wiped off easily without leaving a residue of insects behind.

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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

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2 Improve air circulation around the rosette and avoid overhead watering to ensure the leaves dry quickly after moisture contact.

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

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Cottony Blight (Botrytis)

A fungal infection that thrives in high humidity and can cause greyish-white fuzzy growth, particularly on decaying organic matter or wounded leaf tissue. It often targets the base of the plant if the substrate stays too damp.

Common

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How to confirm: Inspect the base of the rosette for any signs of mushy, darkened tissue accompanying the white fuzz.

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shopping_cart Recommended Products

1 Remove any heavily infected or decaying leaves and debris from the base of the plant to prevent the fungus from spreading.

2 Apply an organic fungicide to the affected areas to control the blight and protect healthy tissue.

Bonide Captain Jack's Copper Fungicide 32 oz

0.9 L • 1 pcs • Organic

$12

In Stock

3 Improve air circulation and reduce humidity around the plant, and ensure the substrate is not staying too damp by monitoring moisture levels.