This recipe for sodium bicarbonate solution helps combat and increase plant resistance to mildew and powdery mildew. It’s the solution’s basic pH that combats fungal diseases. At tisane et jardin, we’ve used it successfully against mildew and powdery mildew. We consider this recipe to be particularly effective in the prevention or early stages of fungal disease.
Preparation time
5 minutes
Maturation time
Snapshot
Ingredients
- 1 tsp. baking soda
- 1 liter of water
- 2 tbsp. black soap (optional)
Black soap is used here as a wetting agent, i.e. it does not have a direct antifungal action, but helps the solution to adhere to the aerial parts. It thus contributes to the effectiveness and durability of foliar spraying.
Preparation
- Mix the ingredients and pour into a spray bottle.
- Spray all aerial parts (don’t forget under leaves) until saturated.
Frequency of application of sodium bicarbonate solution
Spray once a week (but repeat after rain).
Spray in the evening and avoid direct sunlight.
Storage of sodium bicarbonate solution
Baking soda solutions will keep for 1 year, provided they are kept cool and protected from light. Discard the solution if it changes color or odor.
Take care of yourself and your environment…
- Too high a concentration of bicarbonate can burn the leaves. Do not exceed the suggested concentration. Stir well before spraying.
- You can’t replace black soap with just any dishwashing soap without harming our plants. Dishwashing soaps may contain ingredients (such as perfumes) that are harmful to plants and the environment.