Thymus camphoratus Tiny Black Flies - Causes & Fixes

Jump to cause: Fungus Gnats (Sciaridae) Excessive Soil Moisture / Poor Drainage High Organic Matter in Substrate

search Possible Causes

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Fungus Gnats (Sciaridae)

The tiny black flies are likely fungus gnat adults, which lay eggs in moist soil. Their larvae feed on organic matter and can damage the fine root system of Camphor Thyme, leading to secondary rot.

Very Common

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How to confirm: Place a yellow sticky trap near the base of the plant to confirm the presence of flying adults.

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shopping_cart Recommended Products

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 kill larvae in the soil.

GROWIT Soil Moisture Meter - Blue

Water Meters

$12

In Stock

3 Apply a biological control or organic spray to target any remaining larvae and prevent further infestation.

Bonide Captain Jack's Neem Oil 32 oz

0.9 L • 1 pcs • Organic

$10

In Stock

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Excessive Soil Moisture / Poor Drainage

Camphor Thyme is a Mediterranean species that requires well-draining, sandy soil. Constant moisture creates the perfect breeding ground for fungus gnats and can lead to root suffocation.

Very Common

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How to confirm: Stick your finger two inches into the soil; if it feels saturated or muddy, you are overwatering.

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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 a biological control like Bonide Captain Jack's Neem Oil to target the larvae and adults, and ensure the plant is in a well-draining medium.

Bonide Captain Jack's Neem Oil 32 oz

0.9 L • 1 pcs • Organic

$10

In Stock

3 Repot the plant in a highly porous, well-draining substrate by mixing in horticultural perlite to improve aeration and prevent future moisture buildup.

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High Organic Matter in Substrate

A substrate too rich in compost or peat moss provides an abundance of food for gnat larvae. While Camphor Thyme likes nutrients, overly 'heavy' soil promotes insect populations.

Common

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How to confirm: Examine the potting mix to see if it contains high amounts of decomposing organic material or peat.

build How to fix it

shopping_cart Recommended Products

1 Apply a biological control to eliminate the adult and larval stages of the flies.

Super Ninja Fungus Gnat Traps - 30 Pack

30 pcs

$7

In Stock

2 Reduce the organic matter in your substrate by mixing in horticultural perlite to improve drainage and aeration.

Legigo Perlite 15qt