Fertilizing your African violets with epsom salts sounds a bit counterintuitive as most plants do not respond well to salt water. The truth is that epsom salts do not contain actual salt but do contain the trace mineral salts sulfur and magnesium that boost bloom in flowering plants. Applied once per month epsom salts will help trigger bloom in your violets and be a good companion to your African violet specialty fertilizer.
Dissolve two tablespoons of epsom salts in one gallon of tepid water in a watering can or pitcher. Swish or swirl the salts in the water to dissolve them and combine the two.
Hold the African violet plant pot over the sink and pour the mixture under the leaves drenching the soil but keeping the leaves dry. Allow all of the excess epsom solution to drain away before placing the pot back in its tray or decorative container.
Repeat this application once per month in lieu of a regular watering session.