Echeveria shaviana Madre del Sur White Cottony Spots - Causes & Fixes

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

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Mealybugs

These small, soft-bodied insects produce a white, waxy, cottony secretion to protect themselves. They hide in the tight crevices between the fleshy leaves of Echeveria shaviana and suck the sap, leading to leaf discoloration or rot.

Very Common

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How to confirm: Use a toothpick to gently probe the white spots; if they move or break away as a cluster, it is likely mealybugs.

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1 Isolate the plant immediately from other greenery to prevent the mealybugs from spreading to your entire collection.

2 Treat the infestation by spraying the plant with an organic insecticide/miticide to kill the insects and their waxy coatings.

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3 Use a cotton swab dipped in isopropyl alcohol to manually remove visible white cottony clusters from the crevices of the leaves.

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Cottony Scale

Similar to mealybugs, scale insects can form white, fuzzy patches on the plant. They attach themselves firmly to the leaf surfaces or stem of your Echeveria to feed on nutrients.

Common

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How to confirm: Check if the white spots are fixed in place and if there is a sticky substance (honeydew) on the leaves below the spot.

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

2 Treat the affected areas by spraying the plant with an organic insecticide/miticide to eliminate the scale insects and their eggs.

Bonide Captain Jack's Neem Oil 32 oz

0.9 L • 1 pcs • Organic

$10

In Stock

3 Gently wipe away any visible white cottony patches and dead insects using a cotton swab dipped in isopropyl alcohol.

warning

Botrytis (Gray Mold)

In high humidity or poorly ventilated environments, Botrytis can manifest as fuzzy, light-colored patches. This fungal pathogen thrives on the moisture often trapped between the compact rosette leaves of this species.

Common

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How to confirm: Inspect if the white fuzz is accompanied by soft, decaying, or translucent tissue on the leaf edges.

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1 Remove and discard any heavily infected leaves to prevent the fungus from spreading to the rest of the rosette.

2 Apply an organic fungicide to the affected areas and improve air circulation around the plant to reduce humidity.