Canna Orange Shades Fine Webbing - Causes & Fixes

Jump to cause: Two-Spotted Spider Mite Infestation Tetranychus urticae (European Red Spider Mite) Outbreak High Humidity/Microclimate Mold (Secondary Symptom)

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Two-Spotted Spider Mite Infestation

These microscopic arachnids thrive in hot, dry conditions common for Canna lilies. They pierce plant cells to suck out nutrients, leaving behind fine silk webbing as they create colonies on the undersides of leaves.

Very Common

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How to confirm: Hold a white piece of paper underneath a leaf and tap the leaf sharply to see if tiny crawling dots fall onto the paper.

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shopping_cart Recommended Products

1 Immediately spray the undersides of leaves and all plant surfaces with an organic miticide to kill existing mites and larvae.

Bonide Captain Jack's Neem Oil 32 oz

0.9 L • 1 pcs • Organic

$10

In Stock

2 Increase local humidity and avoid hot, dry air to make the environment less hospitable for spider mite reproduction.

Flora Premium Plant Mister

Spray Bottles

$12

In Stock

3 Check the soil moisture levels regularly to ensure the plant is not under drought stress, which can exacerbate infestations.

GROWIT Soil Moisture Meter SMM-V3

Water Meters

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Tetranychus urticae (European Red Spider Mite) Outbreak

A specific strain of spider mite that is highly prevalent in ornamental Canna species during summer heatwaves. The webbing often becomes more dense around new growth and leaf margins as the population grows.

Very Common

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How to confirm: Inspect the leaf undersides for tiny, bright red or orange moving specks.

build How to fix it

shopping_cart Recommended Products

1 Immediately spray the plant, especially the undersides of leaves and new growth, with an organic miticide to kill existing mites and larvae.

Bonide Captain Jack's Neem Oil 32 oz

0.9 L • 1 pcs • Organic

$10

In Stock

2 Increase local humidity around the Canna Lily by misting the foliage regularly, as spider mites thrive in hot, dry conditions.

Flora Premium Plant Mister

Spray Bottles

$12

In Stock

3 Prune and dispose of heavily infested or dead leaves to reduce the mite population and prevent further spread to healthy foliage.

Fiskars 5/8" Bypass Pruning Shears

Cutting Tools

$13

In Stock

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High Humidity/Microclimate Mold (Secondary Symptom)

While webbing is primarily an arachnid symptom, extremely high humidity in dense Canna clumps can sometimes cause fungal hyphae to appear thread-like. However, this usually presents as fuzzy patches rather than structural webs.

Common

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How to confirm: Check if the 'webbing' is actually attached to a central structure or if it feels more like a surface film that disappears when wiped.

build How to fix it

shopping_cart Recommended Products

1 Inspect the undersides of leaves for tiny moving dots or structural webs to confirm if spider mites are present; if found, treat with an organic insecticide.

Bonide Captain Jack's Neem Oil 32 oz

0.9 L • 1 pcs • Organic

$10

In Stock

2 Improve airflow around the dense Canna clumps by pruning dead foliage and spacing plants to reduce the high humidity microclimate.

3 Monitor soil moisture levels to ensure the base of the plant is not staying excessively damp, which can exacerbate secondary fungal issues.