Zantedeschia Captain Palermo Tiny Black Flies - Causes & Fixes

search Possible Causes

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Fungus Gnats

These small black flies are the larvae of fungus gnats, which thrive in the moist organic matter of Calla Lily potting soil. They feed on decaying plant material and can damage the developing root system of 'Captain Palermo' if populations become large.

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 adult flies and break the reproductive cycle.

Super Ninja Fungus Gnat Traps - 30 Pack

30 pcs

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 survive.

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

Calla Lilies require well-draining soil, but prolonged wetness creates the perfect breeding ground for fungus gnat larvae. Overwatering prevents oxygen from reaching the rhizomes, leading to a damp environment that attracts these pests.

Very Common

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How to confirm: Stick your finger two inches into the soil; if it feels muddy or stays wet for several days, 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 to disrupt the fungus gnat breeding cycle.

GROWIT Soil Moisture Meter SMM-V3

Water Meters

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2 Apply a biological control like Captain Jack's Neem Oil to target the adult flies and larvae.

Bonide Captain Jack's Neem Oil 32 oz

0.9 L • 1 pcs • Organic

$10

In Stock

3 Repot the Calla Lily in a well-draining medium amended with perlite to improve aeration and prevent future moisture buildup.

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High Organic Matter in Substrate

A substrate too rich in decomposing peat moss or compost can provide an abundant food source for fly larvae. While 'Captain Palermo' loves nutrients, overly decomposed organic material attracts more frequent insect visits.

Common

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How to confirm: Examine the soil surface for tiny white larvae crawling through the top layer of the potting mix.

build How to fix it

shopping_cart Recommended Products

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

Bonide Captain Jack's Neem Oil 32 oz

0.9 L • 1 pcs • Organic

$10

In Stock

2 Deploy yellow sticky traps near the soil surface to capture flying adults and monitor the infestation level.

Super Ninja Fungus Gnat Traps - 30 Pack