Anthurium andreanum Solara Tiny Black Flies - Causes & Fixes

Jump to cause: Fungus Gnats Overwatering and Soil Compaction Excessive Organic Matter in Substrate

search Possible Causes

error

Fungus Gnats

The tiny black flies are likely the adult stage of fungus gnats, which thrive in the moist, organic-rich potting medium preferred by Anthuriums. Their larvae live in the soil and feed on decaying organic matter and fine root hairs, potentially causing root damage.

Very Common

lightbulb

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

build How to fix it

shopping_cart Recommended Products

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

Super Ninja Fungus Gnat Traps - 30 Pack

30 pcs

$7

In Stock

2 Allow the top inch of soil to dry out completely between waterings to make the environment less hospitable for larvae.

GROWIT Analog Soil Moisture Meter

Water Meters

—

3 Apply a biological control or organic insecticide to target the larvae living in the organic matter.

Bonide Captain Jack's Neem Oil 32 oz

0.9 L • 1 pcs • Organic

$10

In Stock

error

Overwatering and Soil Compaction

Excessive moisture levels in the Anthurium's substrate create the perfect breeding ground for fungus gnat larvae. If the medium stays saturated, it lacks oxygen, leading to a cycle of high humidity that attracts more pests.

Very Common

lightbulb

How to confirm: Stick your finger two inches into the soil; if it feels soggy and smells slightly sour, you are overwatering.

build How to fix it

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 breeding cycle.

GROWIT Soil Moisture Meter SMM-V3

Water Meters

—

2 Repot the Anthurium in a fresh, well-aerated medium like a mix of orchid bark and perlite to resolve soil compaction and improve drainage.

Legigo 2qt Organic Orchid Bark

1.9 L • Pine Bark

$12

In Stock

3 Apply a biological control such as Neem Oil or a targeted spray to eliminate adult flies and larvae.

Bonide Captain Jack's Neem Oil 32 oz

0.9 L • 1 pcs • Organic

$10

In Stock

warning

Excessive Organic Matter in Substrate

Anthuriums require well-draining media like bark or sphagnum; using a heavy peat-based soil with too much decomposing compost provides an abundant food source for larvae.

Common

lightbulb

How to confirm: Inspect the potting mix for high amounts of decomposed bark or peat that may be turning into dark, mushy silt.

build How to fix it

shopping_cart Recommended Products

1 Apply a biological control to eliminate the adult flies and larvae by using an organic insecticide spray.

Bonide Captain Jack's Neem Oil 32 oz

0.9 L • 1 pcs • Organic

$10

In Stock

2 Repot the Anthurium in a highly aerated, well-draining medium such as orchid bark or a mix containing perlite to remove the excess organic food source.