Kalanchoe Passion Dione Tiny Black Flies - Causes & Fixes

Jump to cause: Fungus Gnats Excessive Soil Moisture Decomposing Organic Matter

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Fungus Gnats

The tiny black flies are likely the adult stage of fungus gnats, which thrive in the moist topsoil layers preferred by Kalanchoe. Their larvae feed on organic matter and can damage the fine feeder roots of your Passion Dione.

Very Common

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How to confirm: Place a yellow sticky trap near the soil surface to see if small flies are captured.

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1 Deploy yellow sticky traps to capture the adult flying gnats and break the reproductive cycle.

Super Ninja Fungus Gnat Traps - 30 Pack

30 pcs

$7

In Stock

2 Reduce watering frequency and allow the top inch of soil to dry out completely to eliminate the moist environment larvae need to thrive.

GROWIT Soil Moisture Meter - Blue

Water Meters

$12

In Stock

3 Top-dress the soil with a layer of horticultural perlite or sand to create a dry barrier that prevents adults from laying eggs in the organic matter.

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Excessive Soil Moisture

Kalanchoe passion Dione is a succulent that requires well-draining media; constantly wet soil creates the perfect breeding ground for fungus gnat larvae. Overwatering also weakens the plant's structural integrity, making it more susceptible to pests.

Very Common

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How to confirm: Stick your finger two inches into the soil to see if it remains damp long after watering.

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shopping_cart Recommended Products

1 Reduce watering frequency and allow the top inch of soil to dry out completely before watering again to disrupt the fungus gnat life cycle.

GROWIT Soil Moisture Meter SMM-V3

Water Meters

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2 Apply yellow sticky traps near the soil surface to capture adult flies and prevent further breeding.

Super Ninja Fungus Gnat Traps - 30 Pack

30 pcs

$7

In Stock

3 Repot the Kalanchoe in a well-draining succulent mix amended with perlite to improve aeration and prevent future moisture retention.

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Decomposing Organic Matter

If there is old, decaying leaf litter or uncomposted potting mix in the pot, it provides an ideal food source for flying insects. This nutrient-rich decay attracts pests that mistake the succulent's environment for a breeding site.

Common

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How to confirm: Inspect the top layer of soil for any decaying plant debris or thick moss buildup.

build How to fix it

shopping_cart Recommended Products

1 Remove all visible decaying organic matter, dead leaves, and old debris from the surface of the soil to eliminate the breeding site.

2 Apply yellow sticky traps near the plant to capture and reduce the adult population of flying insects.

Super Ninja Fungus Gnat Traps - 30 Pack

30 pcs

$7

In Stock

3 Repot the Kalanchoe in fresh, well-draining potting mix and ensure the new medium is free of uncomposted material.