Boston Fern Fine Webbing - Causes & Fixes

Jump to cause: Spider Mites (Tetranychidae) Extreme Low Humidity

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Spider Mites (Tetranychidae)

The presence of fine webbing is a classic sign of a spider mite infestation. These tiny arachnids thrive in the low-humidity environments that Boston Ferns often encounter, feeding on the plant's sap and causing stippling on the fronds.

Very Common

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How to confirm: Hold a white piece of paper under a frond and tap it to see if tiny specks fall off and move.

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

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2 Increase ambient humidity around the fern by using a mister or pebble tray to create an environment less favorable to mites.

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3 Gently wipe the fern fronds with a damp cloth to physically remove webbing and any remaining pests from the leaves.

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Extreme Low Humidity

While webbing is primarily biological, extremely dry air can cause the delicate leaflets of a Boston Fern to become brittle and prone to structural breakdown, which may trap dust or debris in a way that mimics fine silken threads.

Common

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How to confirm: Check if the tips of the fronds are also turning brown and crispy.

build How to fix it

shopping_cart Recommended Products

1 Inspect the plant closely for tiny moving organisms to rule out spider mites, which thrive in dry conditions; if pests are found, treat with an organic insecticide.

Bonide Captain Jack's Neem Oil 32 oz

0.9 L • 1 pcs • Organic

$10

In Stock

2 Increase local humidity around the fern by using a pebble tray or a fine misting spray bottle to prevent leaflets from becoming brittle.

Flora Premium Plant Mister

Spray Bottles

$12

In Stock

3 Monitor soil moisture levels regularly to ensure the plant remains hydrated without becoming waterlogged.