Why does your Begonia Monza Appleblossom have tiny black flies? Diagnose the cause and fix it with our step-by-step guide.
These small black flies thrive in the moist, organic-rich soil preferred by Begonias. Their larvae feed on decaying organic matter and can damage the delicate root hairs of your Appleblossom Begonia.
Excessive moisture in the substrate creates the perfect breeding ground for fungus gnat larvae. Begonias like Appleblossom are prone to rhizome rot if the soil remains saturated for too long.
The use of heavy compost or peat-based mixes can provide an abundant food source for pests. While Begonias need nutrients, a surplus of decomposing material attracts many small flies.
Your plant might also be experiencing one of these issues:
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