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Paeonia suffruticosa Big Ben White Powder
eco White Powder

Paeonia suffruticosa Big Ben – White Powder

Why does your Paeonia suffruticosa Big Ben have white powder? Diagnose the cause and fix it with our step-by-step guide.

yard View full Paeonia suffruticosa Big Ben care guide
Jump to cause: Powdery Mildew (Podosphaera peoni) Botrytis Blight (Early Stage) Spider Mite Infestation

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Powdery Mildew (Podosphaera peoni)

This is a common fungal disease in Paeonia suffruticosa, especially when humidity is high and airflow is restricted. The white coating consists of fungal spores that can eventually lead to leaf senescence and reduced bloom size.

Very Common
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How to confirm: Inspect the underside of leaves for fine, white thread-like mycelium spreading across the surface.
build How to fix it
shopping_cart Recommended Products
1 Apply an organic fungicide to eliminate existing fungal spores and prevent the spread of the mildew to healthy foliage.
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
2 Prune and dispose of heavily infected leaves to reduce the fungal load and improve air circulation around the plant.
Fiskars 5/8" Bypass Pruning Shears
Fiskars 5/8" Bypass Pruning Shears
Cutting Tools
$13
In Stock
3 Improve airflow around the peony by spacing plants properly and avoid overhead watering to keep the foliage dry.
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Botrytis Blight (Early Stage)

While typically associated with gray mold, early stages of Botrytis in woody peonies can sometimes present as a fuzzy, pale appearance on flower buds or leaf edges during damp spring weather.

Common
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How to confirm: Check if the white patches are accompanied by soft, decaying tissue or brown necrotic spots on the petals.
build How to fix it
shopping_cart Recommended Products
1 Apply an organic fungicide to the affected buds and leaves to halt the spread of the fungal spores.
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
2 Prune and dispose of any heavily infected flower buds or foliage to prevent the blight from spreading to healthy tissue.
Fiskars 5/8" Bypass Pruning Shears
Fiskars 5/8" Bypass Pruning Shears
Cutting Tools
$13
In Stock
3 Improve air circulation around the plant and avoid overhead watering to keep the foliage dry during damp weather.
warning

Spider Mite Infestation

Extremely fine webbing from spider mites can mimic a powdery appearance, particularly when viewed from a distance or under bright light.

Common
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How to confirm: Hold a white piece of paper under a leaf and tap it to see if tiny specks fall off like dust.
build How to fix it
shopping_cart Recommended Products
1 Apply an organic insecticide spray to eliminate the spider mite population and destroy any remaining eggs or larvae.
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 Thoroughly inspect the undersides of leaves for fine webbing and use a firm stream of water to physically wash away mites and debris.
3 Increase airflow around the peony plant and avoid overhead watering to create an environment less favorable to mite reproduction.
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