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Paeonia suffruticosa White Powder
eco White Powder

Paeonia suffruticosa – White Powder

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

yard View full Paeonia suffruticosa care guide
Jump to cause: Powdery Mildew (Podosphaera peoni) Botrytis Blight (Gray Mold) Spider Mite Infestation

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Powdery Mildew (Podosphaera peoni)

This is the most common cause of white, flour-like patches on Tree Peony leaves and buds. It thrives in high humidity and periods of frequent wetting followed by dry conditions.

Very Common
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How to confirm: Check if the white coating can be wiped off with your finger and if it appears primarily on young, tender growth.
build How to fix it
shopping_cart Recommended Products
1 Apply an organic fungicide to the affected leaves and buds to eliminate the fungal spores and prevent further spread.
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 and stems to reduce the fungal load in the garden area.
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 ensure leaves dry quickly after rain or irrigation.
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Botrytis Blight (Gray Mold)

While typically characterized by gray fuzzy mold, early stages of Botrytis can manifest as pale or whitish necrotic spots on the petals and foliage of Paeonia suffruticosa.

Common
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How to confirm: Look for soft, decaying tissue on the flower buds in addition to any white discoloration.
build How to fix it
shopping_cart Recommended Products
1 Remove and destroy all infected petals and foliage to prevent the spread of fungal spores throughout the plant.
2 Apply an organic fungicide to the affected areas to control the growth of the Botrytis blight.
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
3 Improve air circulation around the plant by pruning crowded stems and avoid overhead watering to keep foliage dry.
warning

Spider Mite Infestation

High populations of spider mites can cause leaves to develop a silvery or whitish 'stippled' appearance due to cell damage, which may look like dust from a distance.

Common
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How to confirm: Hold a white piece of paper under a leaf and tap it to see if tiny crawling specks fall onto the paper.
build How to fix it
shopping_cart Recommended Products
1 Apply an organic insecticide/miticide spray to the plant to eliminate existing spider mite populations and kill eggs.
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 spray the undersides of the leaves with water to physically dislodge mites and reduce their population density.
3 Monitor the plant regularly using a magnifying glass to ensure the infestation does not return.
local_hospital All symptoms eco All plants with white powder
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