Canna Cannova Bronze Scarlet Fine Webbing - Causes & Fixes

Jump to cause: Two-Spotted Spider Mite Infestation Tetranychus urticae (European Red Spider Mite) outbreak Low Humidity/Environmental Desiccation

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Two-Spotted Spider Mite Infestation

Spider mites thrive in the warm, dry conditions often experienced by Canna lilies. They pierce the leaf cells to suck out nutrients, leaving behind fine silk webbing and characteristic stippling (tiny yellow dots) on the bronze foliage.

Very Common

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

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1 Immediately spray the plant with an organic miticide to eliminate the spider mite population and destroy eggs.

Bonide Captain Jack's Neem Oil 32 oz

0.9 L • 1 pcs • Organic

$10

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2 Increase humidity around the foliage and wipe leaves with a damp cloth to physically remove webbing and disrupt the mites' dry habitat.

3 Monitor soil moisture levels to ensure the plant is not under drought stress, as dry conditions accelerate mite reproduction.

GROWIT Soil Moisture Meter - Blue

Water Meters

$12

In Stock

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Tetranychus urticae (European Red Spider Mite) outbreak

In high-heat environments, these mites multiply rapidly on Canna lilies, creating dense webs that can eventually cover entire leaf clusters and cause premature bronzing or death of the foliage.

Very Common

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How to confirm: Inspect the undersides of the leaves for tiny reddish or orange dots that move slowly.

build How to fix it

shopping_cart Recommended Products

1 Apply an organic miticide/insecticide spray to the plant, ensuring you coat both the upper and lower surfaces of the leaves to reach the mites and their eggs.

Bonide Captain Jack's Neem Oil 32 oz

0.9 L • 1 pcs • Organic

$10

In Stock

2 Physically remove the dense webbing by rinsing the foliage with a strong stream of water to disrupt the mite population and clean the leaves.

3 Monitor the plant's moisture levels closely, as spider mites thrive in hot, dry conditions; use a moisture meter to ensure the soil remains consistently hydrated.

GROWIT Soil Moisture Meter - Blue

Water Meters

$12

In Stock

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Low Humidity/Environmental Desiccation

While not a primary cause of webbing, extreme lack of humidity can stress Canna lilies, making them more susceptible to mite colonization and causing leaf edges to look 'dusty' or web-like due to micro-cracking.

Common

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How to confirm: Check if the surrounding air is exceptionally dry and if the soil surface has been parched for an extended period.

build How to fix it

shopping_cart Recommended Products

1 Inspect the undersides of leaves for tiny moving dots or actual silk webs to confirm if spider mites have colonized the plant due to the dry conditions.

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 using a pebble tray or a fine misting spray bottle to prevent further leaf desiccation.