How to Make Homemade Plant Food
- 1). Pour 1 gal. of distilled water into a container that will hold a bit more than a gallon. You can also use rainwater--tap water may have chlorine and minerals that can be harmful to plants. Allow the water to stand until it reaches room temperature.
- 2). Pour the measurements of Epsom salt, potassium nitrate, baking powder and ammonia into the water. Mix well.
- 3). Pour some of the homemade plant food into a watering can or pitcher.
- 4). Water your houseplants with the plant food until the soil is sufficiently damp but not steeped in water.
- 5). Use the plant food once every four to six weeks. Giving plants too much food can harm them. Discard any remaining plant food or pour it on outdoor plants.