Why does your Canna Bronze Orange have tiny black flies? Diagnose the cause and fix it with our step-by-step guide.
The larvae of fungus gnats live in moist organic matter and feed on decaying plant roots or fungi. For Canna lilies, which thrive in high moisture, the damp soil provides a perfect breeding ground for these flies.
While usually found on leaves, aphids can appear as tiny dark moving dots. They suck sap from the tender stems and developing flower buds of Canna lilies, often causing leaf curling.
Similar to fungus gnats, these flies are attracted to the high humidity and decaying organic mulch often used around Canna lily rhizomes. They do not feed on the plant directly but indicate a soil environment that is too anaerobic.
Your plant might also be experiencing one of these issues:
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