Spathiphyllum Figaro White Powder - Causes & Fixes

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Powdery Mildew

A fungal disease caused by high humidity and poor air circulation, common in Spathiphyllum when moisture sits on the leaves. It presents as a white, flour-like coating that can eventually lead to leaf spotting and decay.

Very Common

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How to confirm: Inspect the underside of the leaves for fuzzy white patches that can be rubbed off with your finger.

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1 Treat the affected leaves immediately with an organic fungicide to stop the fungal spread.

Bonide Captain Jack's Neem Oil 32 oz

0.9 L • 1 pcs • Organic

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2 Improve air circulation around the plant and reduce humidity levels to prevent further spore development.

3 Prune and discard any heavily infected leaves to prevent the disease from spreading to healthy foliage.

Fiskars 5/8" Bypass Pruning Shears

Cutting Tools

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Mealybugs

These small, soft-bodied insects secrete a white, waxy substance to protect themselves, which looks like powdery residue. In Spathiphyllum, they often hide in the leaf axils (where leaves meet the stem) and suck plant sap.

Common

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How to confirm: Use a magnifying glass to check if the white spots are cottony or fuzzy and move when disturbed.

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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 white, waxy clusters from the leaf axils.

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

Bonide Captain Jack's Neem Oil 32 oz

0.9 L • 1 pcs • Organic

$10

In Stock

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Mineral/Salt Deposits

Hard water or excessive fertilizer buildup can leave white, crusty residue on the leaf surfaces of Peace Lilies. This is often caused by evaporation leaving behind calcium, magnesium, or salts.

Common

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How to confirm: Check if the white spots are crusty and located primarily near the leaf edges or where water droplets dried.

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1 Gently wipe the leaves with a soft, damp cloth to remove the mineral crust and prevent further buildup.

2 Flush the soil thoroughly with distilled or rainwater to leach out accumulated mineral salts and prevent future deposits.

3 Use a moisture meter to ensure you are not overwatering, as excess water evaporation accelerates salt accumulation.

GROWIT Soil Moisture Meter SMM-V3

Water Meters

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Spider Mites (Silk/Webbing)

While not a 'powder' themselves, extreme spider mite infestations produce fine white webbing that can look like a dusty film over the foliage. This is usually accompanied by tiny yellow stippling on the leaves.

Common

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How to confirm: Hold a white paper underneath a leaf and tap it to see if tiny moving specks fall onto the paper.

build How to fix it

shopping_cart Recommended Products

1 Isolate the plant immediately and spray the foliage thoroughly with an organic insecticide to eliminate the spider mite population.

Bonide Captain Jack's Neem Oil 32 oz

0.9 L • 1 pcs • Organic

$10

In Stock

2 Wipe the leaves with a damp cloth to remove the fine white webbing and any remaining dust or debris.

3 Increase local humidity around the plant, as spider mites thrive in dry environments.