What eats cabbage worms? This question often plagues gardeners who are struggling with the pesky pests that can ravage their cabbage plants. Cabbage worms, also known as cabbageworms, are the larvae of the imported cabbageworm moth, which is a member of the Lepidoptera order. These caterpillars are notorious for their voracious appetite, consuming large amounts of foliage and causing significant damage to cabbage, broccoli, kale, and other cruciferous vegetables. Understanding the predators and natural enemies of cabbage worms can help gardeners develop effective strategies to protect their crops.
Cabbage worms have a variety of natural predators that help keep their populations in check. One of the most common predators is the braconid wasp, which lays its eggs inside the caterpillars. Once the eggs hatch, the larvae feed on the caterpillar’s internal tissues, eventually killing it. Another predator is the lacewing, which feeds on the caterpillars and their eggs. These beneficial insects can be encouraged to thrive in the garden by providing them with a suitable habitat, such as planting flowers that attract them.
Birds also play a significant role in controlling cabbage worm populations. Chickadees, blue jays, and other small birds feed on the caterpillars, helping to reduce their numbers. To attract these birds to the garden, consider planting native shrubs and trees that provide food and shelter.
Predatory beetles, such as the soldier beetles and the Japanese beetles, are also known to feed on cabbage worms. These beetles can be introduced to the garden or left to migrate from nearby habitats. Additionally, certain parasitic nematodes, which are microscopic worms, can be used to control cabbage worm populations. These nematodes infect the caterpillars, causing them to die.
Organic gardeners may opt to use Bacillus thuringiensis (Bt) spray, a biological pesticide that is safe for humans and pets but lethal to caterpillars. This spray is derived from a naturally occurring bacterium that produces a protein toxic to the caterpillars. When ingested, the protein disrupts the caterpillar’s digestive system, leading to death.
In conclusion, there are several predators and natural enemies that can help control cabbage worm populations in the garden. By understanding these biological controls, gardeners can develop a more sustainable and eco-friendly approach to pest management. Encouraging beneficial insects, attracting birds, and using organic pesticides can all contribute to a healthy cabbage crop and a thriving garden ecosystem.
