Lilium OT Motown White Cottony Spots - Causes & Fixes

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Powdery Mildew

This fungal pathogen thrives in high humidity and poor air circulation, creating a white, flour-like coating on the lily leaves. In OT hybrids like Motown, it can significantly reduce photosynthetic capacity.

Very Common

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How to confirm: Look for a dusty appearance that can be wiped off with your finger but often reappears.

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1 Apply an organic fungicide to the affected leaves to eliminate the fungal spores and prevent further spread.

Bonide Captain Jack's Copper Fungicide 32 oz

0.9 L • 1 pcs • Organic

$12

In Stock

2 Prune and dispose of heavily infected leaves to reduce the fungal load and improve airflow around the plant.

3 Increase air circulation around the lily and avoid overhead watering to keep the foliage dry and reduce humidity.

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Mealybug Infestation

Mealybugs are small insects that secrete a white, waxy, cottony substance to protect themselves. They feed on the sap of the Motown Lily, often clustering at the leaf axils or base of the flower buds.

Very Common

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How to confirm: Inspect the undersides of leaves and stem joints for tiny, slow-moving insects hidden in the white fluff.

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1 Isolate the lily from other plants immediately to prevent the mealybugs from spreading to your healthy greenery.

2 Apply an organic insecticide spray to the plant, ensuring you coat the undersides of leaves and the base of flower buds where pests cluster.

Bonide Captain Jack's Neem Oil 32 oz

0.9 L • 1 pcs • Organic

$10

In Stock

3 Use a cotton swab dipped in isopropyl alcohol to manually remove visible white cottony clusters from the leaf axils.

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Botrytis Blight

While typically associated with rotting flowers, Botrytis can manifest as fuzzy grey or white patches on tender lily tissues during damp conditions. It often attacks the large, showy blooms characteristic of the Motown variety.

Common

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How to confirm: Check if the white spots are accompanied by soft, brownish rot on the petals or stems.

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1 Remove and discard all infected flowers and damaged plant tissue immediately to prevent the fungus from spreading to healthy blooms.

2 Apply an organic fungicide to protect remaining healthy tissues from further fungal development.

Bonide Captain Jack's Copper Fungicide 32 oz

0.9 L • 1 pcs • Organic

$12

In Stock

3 Improve air circulation around the lilies and avoid overhead watering to ensure the foliage and blooms stay dry, reducing the damp conditions Botrytis thrives in.

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Sclerotinia (White Mold)

This soil-borne pathogen can cause white, cottony mycelium to appear at the base of the lily stem. It can lead to rapid stem collapse and death of the plant.

Common

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How to confirm: Examine the very base of the stem near the soil line for fuzzy growth and structural weakness.

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shopping_cart Recommended Products

1 Immediately remove and destroy any infected plant tissue or stems showing white cottony growth to prevent the pathogen from spreading to healthy parts of the lily.

2 Apply an organic fungicide to the base of the plant and surrounding soil to combat the fungal mycelium.

Bonide Captain Jack's Copper Fungicide 32 oz

0.9 L • 1 pcs • Organic

$12

In Stock

3 Improve air circulation around the base of the lily and ensure the soil is not staying overly saturated, as moisture promotes Sclerotinia growth.