Which plant feature is particularly beneficial for attracting helpful insects?

The presence of flowering plants that provide nectar and pollen is especially beneficial for attracting helpful insects. Many beneficial insects, such as bees, butterflies, and certain predatory wasps, rely on nectar and pollen as their food source. These insects play crucial roles in pollination, which helps in the reproduction of many plants, as well as controlling pest populations, thus contributing to a healthier ecosystem.

While evergreen shrubs with dense foliage can provide shelter and habitat for various insects, they may not have the same drawing power as flowering plants, which directly offer food. Cacti, renowned for their resilience in arid environments, do not serve as primary attractants for helpful insects because they typically have fewer flowers and produce less nectar. Leafy vegetables can offer some cover but do not provide the essential resources needed by beneficial insects to thrive and reproduce. Therefore, flowering plants are the key feature that effectively draws these helpful insects into the garden or landscape.