How to Get Rid of Aphids on Peppers


Aphids are probably to blame if you see a sticky residue on the leaves and stems of your pepper plants, or if the plants’ leaves turn yellow and curl up, as both of these symptoms indicate. These insects with soft bodies gather on the underside of the leaves, where they feed on the sap and leave a trail of sticky honeydew behind them as they go. The green peach aphid is the most frequent kind of pepper aphid in Sunset’s Climate Zones 14 through 17, and its colour ranges from light green to pinkish. It is most active during the warm days of late spring and early summer, when it attacks peppers.

  1. According to recommendations made by the University of Minnesota Extension, weeds should be removed from both within and around the pepper bed. Peppers that were grown in surrounding uncultivated sections of the garden are often infested by aphids.

  2. First thing in the morning, use a water sprayer attached to your garden hose to give the area a good soaking. Aim the spray towards the underside of the leaves, which is the most common feeding location for aphids on plants. Aphids are washed off the plant by the water, and they often perish in the process since they are unable to find their way back to the plant. Spraying the leaves in the morning assures that they will be dry by the time night falls, which reduces the risk of mildew growth.

  3. The University of California Integrated Pest Management Program recommends filling a spray bottle with insecticidal soap and applying it in the manner described on the product’s packaging. Before you may use some insecticidal soaps, you will first need to dilute them with water. Spray the areas of the pepper plant that are affected by the pest in the wee hours of the morning or late at night. Because the soap may kill helpful insects as well as aphids, it should be used at a time when beneficial insects are not currently eating or after they have finished feeding for the day. Otherwise, the soap will clog the aphids’ pores and kill them.

  4. The day after spraying the peppers with insecticidal detergent, you should give them a thorough rinsing with clean water. The soap is only effective while it is wet, but if you don’t rinse it off, it will clog the pores on the pepper leaves and render them useless. Repeat the application of the insecticidal soap once every three days until you no longer see aphids on the plant.

  5. Remove any leaves from the pepper plant that are severely damaged. Leaves that have suffered significant damage from feeding, such as significant yellowing or holes, are not likely to heal, and they may house disease that may spread to the rest of the plant.

    Things You Will Need

    • Garden hose with spray attachment

    • Insecticidal soap

    • Spray bottle


    The use of silver plastic mulch may assist in preventing aphid infestations from taking place. Before you plant the pepper seedlings, apply the mulch to the planting area. Insecticides containing neem oil have the potential to eradicate severe aphid infestations. When using neem or any other kind of insecticide, be sure to follow the recommendations on the packaging.