Capsicum annuum Favorit Purple Red White Powder - Causes & Fixes

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Powdery Mildew

This fungal disease is common in Capsicum species when high humidity and poor air circulation are present. It manifests as white, flour-like patches on the upper surfaces of leaves, eventually causing them to yellow and drop.

Very Common

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How to confirm: Inspect the underside of the leaves to see if the white spots are spreading across the leaf surface like a dusting of flour.

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1 Apply an organic fungicide to eliminate the existing fungal spores and prevent the disease from spreading to healthy leaves.

Bonide Captain Jack's Copper Fungicide 32 oz

0.9 L • 1 pcs • Organic

$12

In Stock

2 Improve air circulation around the plant and reduce humidity by spacing plants further apart and avoiding overhead watering.

3 Prune and carefully dispose of any heavily infected leaves to prevent the fungus from spreading through the foliage.

Fiskars 5/8" Bypass Pruning Shears

Cutting Tools

$13

In Stock

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Whitefly Infestation

Small, white flying insects cluster on the undersides of pepper leaves and excrete honeydew. This can create a sticky residue that may appear as a dull film or attract secondary sooty mold.

Common

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How to confirm: Gently shake a branch over a white piece of paper to see if tiny white insects flutter upward.

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shopping_cart Recommended Products

1 Apply an organic insecticide spray to the undersides of the leaves to eliminate adult whiteflies, larvae, and eggs.

Bonide Captain Jack's Neem Oil 32 oz

0.9 L • 1 pcs • Organic

$10

In Stock

2 Deploy yellow sticky traps around the plant to capture flying adults and monitor the population levels.

Super Ninja Fungus Gnat Traps - 30 Pack

30 pcs

$7

In Stock

3 Wipe the leaves with a damp cloth to remove the sticky honeydew residue and prevent secondary sooty mold growth.

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Mealybugs

These sap-sucking pests produce a white, cottony waxy coating to protect themselves. In ornamental peppers, they often hide in the leaf axils or near the stem junctions.

Common

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How to confirm: Use a magnifying glass to look for small, slow-moving white masses tucked into the joints of the stems.

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shopping_cart Recommended Products

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

2 Apply an organic insecticide spray to the plant, ensuring you target the leaf axils and stem junctions where the white waxy coating is visible.

Bonide Captain Jack's Neem Oil 32 oz

0.9 L • 1 pcs • Organic

$10

In Stock

3 Wipe away visible pests and their cottony residue using a cotton swab dipped in isopropyl alcohol to kill them on contact.

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Calcium Deficiency (Salt Residue)

While not a biological pathogen, heavy mineral buildup from hard water or over-fertilization can leave white, crusty deposits on leaf edges. This is often accompanied by 'blossom end rot' in the developing pepper fruit.

Common

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How to confirm: Check if the white substance wipes off easily and if the tips of the leaves or fruit edges are turning black/brown.

build How to fix it

shopping_cart Recommended Products

1 Flush the soil thoroughly with distilled or rainwater to wash away accumulated mineral salts and prevent further buildup.

2 Apply a calcium supplement to strengthen cell walls and prevent blossom end rot in the developing peppers.