Spathiphyllum Pearl Cupido White Cottony Spots - Causes & Fixes

Jump to cause: Mealybugs Powdery Mildew Cottony Root Rot (Pythium/Phytophthora)

search Possible Causes

error

Mealybugs

These small, soft-bodied insects secrete a white, waxy substance to protect themselves, which appears as cottony tufts on the undersides of leaves and at leaf nodes. They suck sap from the Spathiphyllum, causing yellowing and eventual foliage decline.

Very Common

lightbulb

How to confirm: Use a magnifying glass or smartphone zoom to check if the white spots move or are attached to small, insect-like bodies near the stem joints.

build How to fix it

shopping_cart Recommended Products

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

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

Bonide Captain Jack's Neem Oil 32 oz

0.9 L • 1 pcs • Organic

$10

In Stock

3 Use a cotton swab dipped in rubbing alcohol to manually remove visible white cottony tufts from the leaf nodes and undersides of leaves.

warning

Powdery Mildew

This fungal disease manifests as a white, dusty coating on leaf surfaces, often triggered by high humidity and poor air circulation around the Peace Lily's foliage. Unlike insects, this looks more like a fine flour dusting rather than distinct tufts.

Common

lightbulb

How to confirm: Rub a finger across the white spot; if it wipes away easily like dust without leaving behind a residue or insect body, it is likely fungal.

build How to fix it

shopping_cart Recommended Products

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

In Stock

2 Improve air circulation around the foliage and reduce humidity levels to create an environment less hospitable to fungal growth.

3 Gently wipe the leaves with a damp cloth to remove existing fungal dust and prevent it from spreading to healthy parts of the plant.

warning

Cottony Root Rot (Pythium/Phytophthora)

In cases of severe overwatering, certain water molds can cause a white, fuzzy appearance around the base of the stem or root crown. This is accompanied by the rapid wilting and darkening of the Spathiphyllum leaves.

Common

lightbulb

How to confirm: Gently lift the plant from its pot to check if the roots are dark, slimy, and emitting a foul odor.

build How to fix it

shopping_cart Recommended Products

1 Immediately remove the plant from its current pot and inspect the roots; prune away any mushy, dark, or foul-smelling roots using sterilized shears.

2 Repot the Peace Lily in a fresh, well-draining medium like Espoma Organic Potting Soil Mix to prevent further moisture retention around the crown.