Our organic horticultural soap is the perfect size to treat a few dozen plants for an entire season, without any waste. This 4-ounce bottle makes 8 quarts of spray. Looking for a different size? Our horticultural soap is also available in 1-ounce and 2-ounce bottles.
Insecticidal or horticultural soap is effective in controlling spider mites and other soft-bodied insects such as aphids, scales, whiteflies, and mealybugs. An advantage of horticultural soap is that it works on contact. There is no residual effect. Only insects coated with the spray are affected. It is considered selective because it has minimal adverse effect on beneficial insects, such as honeybees, lacewings, and ladybugs.
There is minimal potential for plant injury (phytotoxicity) when applied during cooler hours of the day and when the plant is not in full sun.
Some plants are sensitive to soap sprays and may be seriously injured by them, so it's best not to apply it to these plants:
Portulaca (Portulaca grandiflora)
Some tomato varities (Solanum lycopersicum)
Conifers under drought conditions
Plants with a bluish color caused by a waxy leaf coat.