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Crassula Pagoda Rupestris White Cottony Spots
eco White Cottony Spots

Crassula Pagoda Rupestris – White Cottony Spots

Why does your Crassula Pagoda Rupestris have white cottony spots? Diagnose the cause and fix it with our step-by-step guide.

yard View full Crassula Pagoda Rupestris care guide
Jump to cause: Mealybugs Fungal Mold (Sclerotinia or Botrytis) Powdery Mildew

search Possible Causes

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Mealybugs

Mealybugs are common pests for Crassula species that secrete a white, waxy, cotton-like substance to protect themselves. They feed on the sap of the pagoda towers, which can lead to leaf yellowing and stunted growth.

Very Common
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How to confirm: Use a toothpick to gently probe the white spots; if they move or are disturbed easily, it is likely an insect infestation.
build How to fix it
shopping_cart Recommended Products
1 Isolate the plant immediately to prevent the spread of mealybugs to other houseplants and treat the infestation with an organic insecticide spray.
Bonide Captain Jack's Neem Oil 32 oz
Bonide Captain Jack's Neem Oil 32 oz
0.9 L • 1 pcs • Organic
$10
In Stock
2 Use a cotton swab dipped in isopropyl alcohol to manually remove the visible white cottony clusters from the stems and leaf crevices.
3 Monitor the soil moisture levels to ensure the plant is not overwatered, as excess moisture can encourage pest and fungal issues.
GROWIT Soil Moisture Meter - Blue
GROWIT Soil Moisture Meter - Blue
Water Meters
$12
In Stock
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Fungal Mold (Sclerotinia or Botrytis)

High humidity and poor air circulation around the dense structure of the Pagoda Tower can trigger fungal growth that appears as white, fuzzy patches. This is often accompanied by soft, decaying tissue on the stem.

Common
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How to confirm: Check if the white spots are accompanied by soft, mushy stems or a musty smell in the soil.
build How to fix it
shopping_cart Recommended Products
1 Remove all affected stems and soft, decaying tissue immediately to prevent the fungus from spreading to the rest of the plant.
2 Apply a fungicide to the remaining healthy tissue and improve air circulation around the dense structure of the plant.
Bonide Captain Jack's Copper Fungicide 32 oz
Bonide Captain Jack's Copper Fungicide 32 oz
0.9 L • 1 pcs • Organic
$12
In Stock
3 Reduce humidity and ensure the soil is not staying too wet; use a moisture meter to monitor and prevent overwatering.
GROWIT Soil Moisture Meter - Blue
GROWIT Soil Moisture Meter - Blue
Water Meters
$12
In Stock
warning

Powdery Mildew

This fungal disease presents as a fine white powder on the surface of the leaves and crevices. While less common in succulents than in leafy plants, it can occur if the Crassula is kept in a damp, stagnant environment.

Common
lightbulb
How to confirm: Wipe a leaf with a damp cloth; if the white residue wipes away easily leaving a clean surface, it is likely powdery mildew.
build How to fix it
shopping_cart Recommended Products
1 Apply an organic fungicide to the affected leaves and crevices to eliminate the fungal spores.
Bonide Captain Jack's Neem Oil 32 oz
Bonide Captain Jack's Neem Oil 32 oz
0.9 L • 1 pcs • Organic
$10
In Stock
2 Improve air circulation around the plant and reduce humidity to prevent the fungus from spreading.
3 Ensure the plant is in a well-draining environment and avoid overhead watering that leaves moisture in leaf crevices.
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