Begonia coccinea Fine Webbing - Causes & Fixes

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

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Two-Spotted Spider Mite Infestation

These tiny arachnids thrive in the warm, dry conditions often experienced by Begonia coccinea. They pierce plant cells to suck out nutrients, leaving behind characteristic fine silk webbing and stippled (yellowish) spots on the leaves.

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 insecticide/miticide to kill existing spider mites and their eggs.

Bonide Captain Jack's Neem Oil 32 oz

0.9 L • 1 pcs • Organic

$10

In Stock

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

Flora Premium Plant Mister

Spray Bottles

$12

In Stock

3 Monitor soil moisture levels to ensure the environment does not become too dry, as low humidity encourages mite reproduction.

GROWIT Soil Moisture Meter - Blue

Water Meters

$12

In Stock

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Tetranychus urticae (European Red Spider Mite)

A specific subspecies of spider mite that is highly aggressive on Begonia species. The webbing becomes denser as the population grows, eventually causing leaf chlorosis and premature leaf drop.

Common

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How to confirm: Inspect the undersides of the leaves closely for tiny red or orange moving dots near the webbing sites.

build How to fix it

shopping_cart Recommended Products

1 Apply an organic insecticide spray to eliminate the spider mite population and destroy eggs, larvae, and adults.

Bonide Captain Jack's Neem Oil 32 oz

0.9 L • 1 pcs • Organic

$10

In Stock

2 Increase humidity around the plant by using a fine mist spray to create an environment less favorable for mite reproduction.

Flora Premium Plant Mister

Spray Bottles

$12

In Stock

3 Prune and dispose of heavily infested or dead leaves to prevent the webbing from spreading to healthy foliage.

Fiskars 5/8" Bypass Pruning Shears

Cutting Tools

$13

In Stock

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High Humidity/Mold Growth (Secondary)

While not a direct cause of webbing, extremely high humidity without airflow can lead to fine fungal hyphae that may be mistaken for spider mite silk. This often accompanies the stressed state of a Begonia under pest attack.

Common

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How to confirm: Check if the 'webbing' appears more like fuzzy, stationary spots rather than structured silk strands between stems.

build How to fix it

shopping_cart Recommended Products

1 Inspect the undersides of leaves for tiny moving dots or eggs to confirm if the webbing is spider mite silk or fungal hyphae.

Bonide Captain Jack's Neem Oil 32 oz

0.9 L • 1 pcs • Organic

$10

In Stock

2 Increase air circulation around the plant using a small fan to prevent moisture from settling on leaves and encouraging mold growth.

3 Reduce humidity levels and ensure the plant is not in a stagnant environment to mitigate secondary fungal issues.