To repel spiders, aphids, and other insect pests in the garden, my neighbor Bea douses plants with an all-natural insecticide she makes with Castile soap. It’s a genius recipe.
Made with olive oil, Castile soap’s history goes back more than a thousand years; the Crusaders are thought to have introduced it to Europe as early as the 11th century. You can use it to wash dishes, to launder clothes, to clean the houseâ€”and as an all-natural insecticide in the garden. Bea Johnson, author of Zero Waste Home, shares her recipe:
Above: A bottle of Castile soap on Bea Johnson’s windowsill.
Ingredients and Materials:
- Liquid Castile soap, such as Organic Unscented Castile Soap; $15.29 fo 32 ounces from Vitamin Shoppe.
- A glass spray bottle
Add 1/4 cup Castile soap to one gallon of water. Mix and pour into a reusable glass spray bottle.
For more of Bea’s mindful gardening tips, see Ask the Expert: 10 Tips for a Simplified Garden, to Grow More With Less.
Above: The Ultimate Glass Spray Bottle is $8.39 from Olive Cart.
Spray leaves of affected plants with the mixture; allow to dry.
For more all-natural insect repellents, see DIY: Bug Repellent Balm.