That said, most garden professionals recommend using a commercial soap spray that is specifically formulated for this purpose and is safer to use with more predictable results. You can use a vacuum cleaner suck the mites off of your plant, and then use a soap that is made for spider mites on cannabis plants. And remember to spot test! Here’s the problem. Ingredients: Liquid dish soap; Water . Go out to the garden and spray plants if you see aphids (remember that they like to hide on the underside of leaves). First, mix together some water, dish soap, and alcohol. Dish Soap Doesn’t Target Pests. Insecticidal soap may be made at home using ingredients which are commonly used and found around the house. The composition of the dish soap will help dissolve the mites’ exoskeleton and make them more susceptible to … It is best to spray it in the morning, before the plants are hit by direct sun, which may cause burning due to the alcohol contained in this mixture. One easy method is to mix one part rubbing alcohol with one part water, then spray the leaves. Add 1 tablespoon of dish soap into a 1-quart spray bottle. 1 gallon water 2 1/2 tablespoons pure-castile liquid soap 1 tablespoon vegetable oil (optional) Instructions. Fill with tap water. The soap suffocates the mites without harming the plants … If you’re not sure about conditions, you can always ‘wash’ your plants a couple of hours after by giving them a good rinse with clear water. Lastly, add a cup of horticulture oil or Murphys Oil Soap (oil and insecticidal soap accelerate the process of insect-killing) Apply the solution on the indoor and outdoor plants to remove bugs. Soap Spray for Plants. Works very well and the seedlings and rose cuttings I used it on never noticed at all. You want to spray the dish soap water mixture over the entire plant, including the stems and the underside of the leaves. Mild Soap Spray. One recipe I like to use is to mix 2 teaspoons of dish washing soap with 1 quart of water. The common advice is to dissolve a small amount of dish soap in water in a spray bottle and apply it to the unwanted pests that are chomping on our plants. Spray Plants with Water, Dish Soap, and Alcohol to Control Aphids. Or you can try 1 part rubbing alcohol with 3 parts of water. Alcohol is a solovent so that's what it will do to the trichomes on your buds. Bug Spray #2 — Liquid Dish Soap. Fill a gallon-size spray container (I use this one with great results) with water, then add the soap and oil. Add 3 cups of pure water and 1 cup of dish soap with the alcohol. Always use a mild soap when treating your houseplants. But I would be vigilant with the vacuum it works. [ Last edited by lovesblooms - Feb 29, 2016 2:43 PM ( + ) ] Then, put the solution in a spray bottle. Dish soap sprays and washes can also be very effective in getting rid of houseplant pests naturally. This is a variation of the first recipe, but contains only water and dish soap. If you mix vinegar with dish soap, you are mixing a base or alkaline (detergent or ‘soap’) with an acid (vinegar), and the result will be something closer to salt water than to either vinegar or detergent/soap. Be sure to test before using one of these homemade soap sprays on your plants. The alcohol will kill the mites without harming the plants. I use rubbing alcohol to water 1:4 for aphids and flies on plants growing in the greenhouse. Makes 1 gallon of a 1% soap solution Ingredients. This is a quick and easy way to treat plants infected with aphids. The dish soap doesn’t know what you consider to be a pest or weed or disease. Pour the ingredients into a clean spray bottle and shake to mix. There is no specific biological interaction. Another natural solution to get rid of these tiny pests is to use liquid dish soap. Mix or shake the container thoroughly before using.