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Dissolve 100 grams of wood ash in 2 liters of water in a container.
Add a few drops of biodegradable dishwashing detergent to help the solution stick to plant leaves (optional but recommended).
Stir the mixture well and let it sit for a few hours.
Strain the solution through a thick strainer or a piece of cloth to remove any ash particles and avoid clogging the sprayer.
Pour the filtered solution into a spray bottle.
How to Use:
Spray the solution evenly over all parts of the plants affected by aphids, especially the undersides of leaves and stems. Repeat the treatment as needed to keep aphids under control.
Serving and Storage Tips:
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