How to Get Rid of Mealybugs

Mealybugs are small white insects that live on plants and feed on their sap. Despite their tiny size, mealybugs can cause extensive damage to plants and gardens if not addressed. If your plants start to turn yellow and die, they may have been infested with mealybugs. Fortunately, there are many methods you can use to eliminate these pests and keep your plants healthy and vibrant.

Dip cotton balls in 70% isopropyl alcohol. Avoid using other types of alcohol to prevent harming your plants.

Use a cotton ball soaked in rubbing alcohol to wipe the affected areas of the plant. Be sure to wipe both the underside of the leaves and the cracks in the branches. Mealybugs often hide in hard-to-reach places, so make sure to cover the entire plant with the rubbing alcohol.

Use a spray bottle to apply rubbing alcohol on larger plants. Pour rubbing alcohol into the spray bottle and mist the larger plants infested with mealybugs.

Remove any visible mealybugs from the plant. Mealybugs resemble small white bugs coated with a waxy substance. You can pick them off by hand and dispose of them in the trash.

• Although mealybugs don’t bite, it’s advisable to wear gardening gloves to prevent the waxy coating from getting on your hands.

Repeat this method weekly until the mealybugs are gone. Mealybugs are skilled at hiding in hard-to-reach areas, so it’s likely you’ll need to treat the plant multiple times with rubbing alcohol to eliminate them completely. Even if you no longer see them, repeat the treatment a few more times to ensure there are no survivors.

• You’ll know the mealybugs are gone when you no longer see them on the plant and the plant remains healthy and vibrant.

Mix dish soap and neem oil with water in a spray bottle. Use 1 teaspoon (5 ml) of neem oil and 2-3 drops of dish soap. Neem oil, derived from the neem tree, is an effective natural solution for eliminating mealybugs.

Spray the solution onto the plant until it is thoroughly wet. Be sure to cover the underside of the leaves, the base of the branches, and the soil surrounding the plant. The aim is to suffocate the mealybugs in the neem oil mixture.

Move the plant to a shaded area and let it dry. Avoid placing the plant in direct sunlight or in a hot environment to prevent leaf scorch. If you're treating outdoor plants in the ground, wait for a cool day when temperatures are below 29°C.

Spray the solution weekly until all mealybugs are eradicated. A single neem oil application may not completely eliminate the mealybugs. Since mealybugs have a short life cycle, you should continue applying the solution each week until all pests are gone.

• If the plant looks healthy and no mealybugs are visible, they are likely gone.

Remove any branches infected with mealybugs before applying pesticide. The affected branches will be covered with a white waxy coating. Cutting off these infested branches will help reduce the number of mealybugs and improve the effectiveness of the pesticide by eliminating some of their hiding spots.

Use a pesticide specifically designed for ornamental plants. If you are unsure, check the pesticide label. Avoid using pesticides not intended for ornamental plants, as they could harm your plant.

• Some pesticides that can help eliminate mealybugs on ornamental plants include acephate, malathion, carbaryl, and diazinon.

Spray the pesticide thoroughly onto the plant until it is drenched. Apply the pesticide so that it drips from the leaves and branches down to the soil. Make sure to spray the undersides of the leaves and the base of the branches as well.

• Follow the instructions on the pesticide label for optimal results.

Continue applying the pesticide regularly until all mealybugs are eliminated. You may need to spray multiple times to completely eradicate the mealybugs. Refer to the instructions on the pesticide label for the recommended frequency of use to avoid harming the plant.

• If the plant is thriving and you no longer see mealybugs, it means they have been successfully eradicated.

Inspect new plants for mealybugs before bringing them into the garden. Look for small, round insects covered with a white waxy coating. If mealybugs are found on a newly purchased plant, remove them by hand and discard them. If the infestation is severe, you might need to discard the plant or return it to the seller.

• Never introduce a plant with mealybug infestations into your garden, as they will spread to other plants.

Regularly check plants for mealybugs. You can prevent a heavy infestation by frequently treating small groups of mealybugs. If you find mealybugs on the plant, you can remove them manually. For plants with a significant infestation, take the plant out of the garden to avoid further spreading.

Eliminate any gardening tools infested with mealybugs. Mealybugs can accumulate on tools like shovels, pruning shears, and plant pots. Always inspect your gardening tools and avoid using them if infested, as the mealybugs could spread to other plants in your garden.

Avoid fertilizing plants with nitrogen if possible. High nitrogen levels may cause mealybugs to reproduce more quickly. Use a fertilizer that does not contain nitrogen if your plant does not require it.