You are doing it wrong. Here’s what fertilizer to use on what houseplants

5. 🧂 Baking Soda (Diluted)
Why: Natural antifungal that helps treat powdery mildew.
How to Use: Mix 1 teaspoon of baking soda + 1 quart of water + a drop of dish soap. Spray lightly on leaves once a month as a preventative or treatment.
Best Used On: African Violets, Spider Plant, Geraniums, Begonias.
Avoid On: Acid-loving plants like Ferns, Gardenias, Calatheas—can raise pH too much.