DIY: The Best Garden Insecticide (and No Harmful Chemicals) by

Issue 78 · Dry Gardens · June 25, 2013

DIY: The Best Garden Insecticide (and No Harmful Chemicals)

Issue 78 · Dry Gardens · June 25, 2013

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 house—and as an all-natural insecticide in the garden. Bea Johnson, author of Zero Waste Home, shares her recipe:

bea castile soap zero waste ; Gardenista

Above: A bottle of Castile soap on Bea Johnson's windowsill.

Ingredients and Materials:

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.

green glass spray bottle

 

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.

 



Contributions
Have an opinion? Care to comment? We'd love to hear what you have to say.