Zantedeschia Captain Fuego Tiny Black Flies - Causes & Fixes

search Possible Causes

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Fungus Gnats

These small black flies breed in the moist organic matter of the potting soil. Their larvae feed on the delicate root hairs of Zantedeschia, which can lead to nutrient deficiencies and stunted growth in your Calla Lily.

Very Common

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How to confirm: Place a yellow sticky trap near the base of the plant to see if small winged insects are captured.

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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

In Stock

2 Allow the top inch of soil to dry out completely between waterings to disrupt the larvae's moist breeding environment.

GROWIT Soil Moisture Meter - Blue

Water Meters

$12

In Stock

3 Apply a microbial-based soil drench to target and eliminate larvae living in the organic matter.

FoxFarm Bush Doctor Microbe Brew 1 Gallon

3.8 L

$115

In Stock

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Overwatering/Improper Drainage

Excessive soil moisture creates the perfect breeding ground for fungus gnats and can lead to rhizome rot in 'Captain Fuego'. Calla Lilies require well-draining soil even when kept moist.

Very Common

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How to confirm: Stick your finger two inches into the soil; if it feels swampy or smells sour, reduce watering frequency.

build How to fix it

shopping_cart Recommended Products

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

GROWIT Soil Moisture Meter SMM-V3

Water Meters

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2 Apply yellow sticky traps near the soil surface to capture and remove the adult flying insects.

Super Ninja Fungus Gnat Traps - 30 Pack

30 pcs

In Stock

3 Repot the plant in a well-draining medium, incorporating perlite to improve aeration and prevent rhizome rot.

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Soil Organic Matter Decomposition

The flies may be attracted to decaying organic material within a heavy peat-based potting mix. As this matter breaks down, it releases CO2 and moisture that attract adult gnats.

Common

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How to confirm: Check if the top layer of soil is heavily covered in decomposing bark or peat moss.

build How to fix it

shopping_cart Recommended Products

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

Super Ninja Fungus Gnat Traps - 30 Pack

30 pcs

In Stock

2 Reduce moisture levels by allowing the top inch of soil to dry out completely, as damp organic matter attracts these pests.

GROWIT Soil Moisture Meter - Blue

Water Meters