Aglaonema nitidum Silver King White Cottony Spots - Causes & Fixes

Jump to cause: Mealybugs Cottony Scale Sooty Mold (Secondary Infection)

search Possible Causes

error

Mealybugs

These small, soft-bodied insects produce a white, waxy, cotton-like secretion to protect themselves. They congregate in the crevices of the Silver King's leaves and stem junctions, sucking sap and weakening the plant.

Very Common

lightbulb

How to confirm: Inspect the leaf axils and the undersides of leaves for tiny, moving white insects or sticky residue.

build How to fix it

shopping_cart Recommended Products

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

2 Use a cotton swab dipped in isopropyl alcohol to manually remove the visible white cottony masses from the leaf crevices and stem junctions.

3 Apply an organic insecticide spray to the entire plant, ensuring you coat the undersides of leaves and stem joints to eliminate remaining insects and larvae.

Bonide Captain Jack's Neem Oil 32 oz

0.9 L • 1 pcs • Organic

$10

In Stock

warning

Cottony Scale

Certain scale insect species produce a white, fuzzy coating that mimics cotton. They attach themselves firmly to the stems and leaf stalks of Aglaonema, causing localized discoloration.

Common

lightbulb

How to confirm: Gently scrape a white spot with your fingernail; if it reveals a hard, shell-like organism underneath, it is scale.

build How to fix it

shopping_cart Recommended Products

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

Bonide Captain Jack's Neem Oil 32 oz

0.9 L • 1 pcs • Organic

$10

In Stock

2 Manually remove visible white cottony clusters using a cotton swab dipped in isopropyl alcohol to prevent further spread.

3 Isolate the plant from other greenery to prevent the scale insects from migrating to healthy plants.

warning

Sooty Mold (Secondary Infection)

While the mold itself is black, it often appears as a fuzzy texture following the presence of honeydew left by pests. This can sometimes be mistaken for white fungal growth in early stages or when mixed with dust.

Common

lightbulb

How to confirm: Check if there is a sticky substance (honeydew) on the leaf surface beneath the spots.

build How to fix it

shopping_cart Recommended Products

1 Identify and eliminate the underlying pests (such as aphids, mealybugs, or scale) that are producing the honeydew causing the mold.

Bonide Captain Jack's Neem Oil 32 oz

0.9 L • 1 pcs • Organic

$10

In Stock

2 Gently wipe the leaves with a soft, damp cloth to remove the fuzzy mold residue and any remaining honeydew.

3 Monitor soil moisture levels to ensure the environment is not overly humid, which can encourage fungal growth.