This Simple Expert-Approved Method Can Help Prevent Mold in Your Hummingbird Feeders
Published July 6 2025, 8:46 a.m. ET

(L) A group of hummingbirds eating nectar; (R) A damp wall with black mold. (Representative Image Source: Getty Images | (L) Mark Newman; (R)YURY NIKALAYEU)
The secret to attracting hummingbirds to your yard is nectar. The little helicopters like to feast on sugary water that many bird feeders and homeowners like to put out for them, and enjoy the sight from a distance. However, anything sugary combined with warmer climates is likely to either ferment or facilitate mold growth. When putting out food for the precious hummingbirds, it is crucial to ensure the best interests of the birds and avoid common mistakes. Black mold can be highly dangerous for hummingbirds eating from the moldy feeder and can threaten the health of an entire community. Taking responsibility and maintaining the hygiene of the bird feeders should be a priority. Experts at Homes & Gardens have chimed in with guidance on how to prevent mold.

A flock of birds on a hummingbird feeder.