I have an African Violet that has not bloomed in at least two years, despite regular feeding (with a blooming plant food) and watering. The leaf structure appears healthy. Do you have any input?
King County Washington
If African Violets are happy with their conditions they can flower continuously.
Our first thought is light. These plants need bright light, but not direct sunlight. Two to 3 hours a day of filtered sunlight is needed. Are they getting that?
They like temperatures in the 65-75 degree range. Our reference suggests that "even a 5 degree fluctuation from this range can eventually cause growth to stop.", and with it, flowering.
They like humidity so putting them on a saucer of damp pebbles is good.
For some plants, too much fertilizer can make for lush leaf growth at the expense of flowers. We'd recommend only a one-quarter strength dose of fertilizer (of equal amounts of N, P, and K) at each watering.
They generally like to be a bit potbound, but if it's been a long time and lots of roots are coming out of the bottom, we'd suggest repotting.