Canna Lemon 801 Tiny Black Flies - Causes & Fixes

Jump to cause: Fungus Gnats Sciarid Flies (Dark-winged Fungus Gnats) Fruit Flies (Drosophila)

search Possible Causes

error

Fungus Gnats

These small black flies thrive in the moist, organic-rich soil typically used for Canna lilies. Their larvae feed on decaying organic matter and can occasionally damage delicate developing root hairs of the Lemon Canna.

Very Common

lightbulb

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

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 Soil Moisture Meter - Blue

Water Meters

$12

In Stock

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

warning

Sciarid Flies (Dark-winged Fungus Gnats)

Often confused with common fungus gnats, these flies target high-moisture environments. They are attracted to the humid microclimate created by the large, lush leaves of the Canna Lemon 801.

Common

lightbulb

How to confirm: Check if the flies appear more elongated and slower-moving than typical mosquitoes.

build How to fix it

shopping_cart Recommended Products

1 Deploy yellow sticky traps near the soil surface to capture the adult flies and break the breeding 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 these flies require.

GROWIT Soil Moisture Meter - Blue

Water Meters

$12

In Stock

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

FoxFarm Bush Doctor Microbe Brew 1 Gallon

3.8 L

$115

In Stock

warning

Fruit Flies (Drosophila)

If the Canna is kept near composting materials or ripening fruit, these flies may be attracted to the plant. While they don't feed on the Canna itself, they inhabit the same soil zone if organic debris is present.

Common

lightbulb

How to confirm: Observe if the flies are hovering specifically around the soil surface or near nearby decaying organic matter.

build How to fix it

shopping_cart Recommended Products

1 Remove any nearby ripening fruit or decomposing organic matter that may be attracting the flies to the plant's vicinity.

2 Deploy yellow sticky traps near the soil surface to capture and monitor the adult fly population.

Super Ninja Fungus Gnat Traps - 30 Pack

30 pcs

$7

In Stock

3 Ensure the soil surface is clean of organic debris and allow the top layer of soil to dry out to disrupt the flies' breeding cycle.