What is an organic control on the Colorado potato beetle?

There are several effective organic controls for Colorado potato beetles, one of the most popular being the use of neem oil. Neem oil is derived from the neem tree, native to India, and has insecticidal properties that can effectively control Colorado potato beetles. To use neem oil, mix it with water and apply it directly to the affected plants, focusing on the leaves and stems where the beetles are most likely to feed. Neem oil disrupts the beetle's feeding and reproduction, leading to a reduction in their population.

Another organic method is the use of insecticidal soap, which is made from natural oils, such as vegetable oil or canola oil combined with soap. Spraying insecticidal soap directly onto the beetles kills them on contact. Additionally, insecticidal soaps can be used as a preventive measure by spraying them onto plants regularly to deter beetles from feeding and laying eggs.

Lastly, companion planting is an effective organic control method. Planting certain plants near potato plants can help to repel or confuse Colorado potato beetles, reducing their presence and damage to the crop. For example, planting marigolds, nasturtiums, or garlic near potatoes has shown positive effects in controlling Colorado potato beetles.