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Ecoworm Potassium Soap Ready-to-use Spray 0.5L

Ecoworm Potassium Soap Ready-to-use Spray 0.5L

Regular price £9.99 GBP
Regular price Sale price £9.99 GBP
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Potassium Soap is a natural horticultural soap, which works as a natural insecticide and helps to combat and prevent the most common pests, such as aphids, earwigs, red spider mite, scale insects, caterpillars, sawfly larvae, woolly aphids, whitefly and other most common plant pests. Spraying plants with Potassium Soap cover them with a protective film, which protects the plants from harmful external factors.

Potassium Soap can also be used to naturally but effectively clean gardening tools, pots, containers, greenhouses, plastic tunnels, and other surfaces around the home and garden. 

  • Protects flowering and edible plants in the home, greenhouse and garden
  • Cleans various surfaces, greenhouses, pots and gardening tools


  • Helps to combat and prevent the most common pests in homes, gardens and greenhouses
  • can be used as a natural soap to clean up plants if they have suffered a pest attack i.e. to remove sooty mould and mildew
  • Doesn’t affect plant tissue
  • Is a secondary source of potassium for plants
  • Contains no toxic compounds
  • No negative impact on the environment
  • Not harmful for beneficial insects 

Dosage & Application

Plant spraying: as a preventive tool use every fortnight, especially leading up to time when you would normally see pests. If you have seen pests, apply 3-4 subsequent days until you see the pest numbers recede. The treatment should be repeated 8-10 days later, because if even one pest escapes, the infestation can start all over.

Spray thoroughly to upper and lower leaf surfaces, including under the leaf axils, where pests tend to congregate. Apply early morning or late evening.

 Do not apply in full sun or on a windy, rainy day, as the soap will dry out/runoff and will not be as effective.

Surface cleaning: pour or spray on the surface, leave for 1-3min and clean with a brush or cloth. Rinse the surface with water.


Can it be used on all plants?

The fatty acids used in the soap are specifically chosen to be effective against insect pests while being the least toxic possible to plants. Still, some plants may be damaged in extreme conditions, such as temperatures over 32ºC or when the plant is severely dehydrated. Apply Potassium Soap only when the plant has been watered and is well-hydrated. Wilted plants are more susceptible to damage. If you’re concerned that a plant may be sensitive to soap, apply a small amount to one leaf. You’ll know in about a day if the leaf shows spotting, browning, or other signs of damage.

How is it produced?

Potassium soap is made from potassium salts of fatty acids, which are produced by adding potassium hydroxide to fatty acids found in vegetable oils. The final product is pure soap, which does not contain any toxic substances and acts as an excellent household insecticide and surface cleaner.


Store out of direct sunlight, in a well-ventilated, clean place at +5ºC to +30ºC.


<5% soap (potassium salts of fatty acids of vegetable oil), preservatives (Benzisothiazolinone, Methylisothiazolinone, Laurylamine Dipropylenediamine).

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