I’ve used all three, and I honestly can’t tell any difference in terms of the results. I recommend using one of three types of soap for your spray: a castile soap, an organic liquid soap, or an insecticidal soap. He added molasses to the mix and included vinegar as well to lower the pH level and increase the overall effectiveness of the formula. Like many gardeners, Garrett was fertilizing his plants with a compost tea spray when he learned about the horticultural benefits of liquid seaweed. It’s not a product per se but a recipe for a particular type of foliar fertilizer originally developed by Howard Garrett (a.k.a. Here’s the thing to know about Garrett Juice. If you’d like to know more about how to maximize the effectiveness of your neem oil spray, check out my detailed treatment plan and my complete guide to neem oil. For 2-gallon sprayers, I pour 4 tablespoons of neem oil and 2 tablespoons of soap before adding water and shaking.If I were a perfectionist, I would add 1 ⅓ tablespoons of soap to maintain the ratio noted earlier, but I find that 1 tablespoon works just fine. For 1-gallon sprayers, which I use on my outdoor plants, I use roughly the same ratio as above, adding 2 tablespoons neem oil and 1 tablespoon of emulsifier before adding water and shaking.For 16-ounce bottles, which I use on indoor plants, I add ¾ teaspoon neem oil and ½ teaspoon of good castile soap, organic dish soap, or insecticidal soap, then fill the bottle with water and shake thoroughly.I’ve written a detailed step-by-step guide to killing spider mites with neem oil, but here’s a quick overview.: For small infestations, these will work just fine.īut for larger infestations–or for those of you who want to save money and don’t mind mixing your own neem oil spray–I recommend purchasing concentrated neem oil products such as Verdana Neem Oil or Bliss Neem Oil since these will last much longer than the pre-made options and will allow you to mix gallons’ worth of neem oil spray throughout the growing season.Īs with any oil, you’ll need an emulsifying agent to make sure the neem oil and water mix thoroughly, so please don’t forget this step. Three great options are Captain Jack’s Neem Oil, Natria Neem Oil Spray, and Safer Neem Oil Ready to Use. In fact, neem oil is particularly effective since it contains the chemical compound azadirachtin, which wreaks havoc on spider mites’ hormonal systems.įor those of you who value time and convenience, you can buy pre-made neem oil sprays on Amazon or at your local box stores or garden centers. When mixed with water and a soapy emulsifier, neem oil will coat spider mites in a thin layer of oil, killing them quickly. Simply put, pick one of the 11 options noted below, buy the relevant products, follow the directions, and see how things go.Īnd here’s the good news: If things don’t go exactly as you hoped they would, you’ve got 10 more options to try! Neem Oil Concentrate 1. However, I want you to be fully informed, so I’ve added short descriptions about each below for your convenience. Additional Treatments: These might be effective, under certain circumstances, but I don’t practice or recommend them, which is why they aren’t included in my official list.Preferred Treatments: These are my favorite approaches to killing spider mites, ranked in order of efficacy, cost effectiveness, and ease.
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