What are beneficial insects known for in a growing environment?

Beneficial insects play a crucial role in maintaining the health of plants within a growing environment by controlling pest populations and promoting overall plant well-being. These insects, which include predators like ladybugs and lacewings, help manage the numbers of harmful pests such as aphids and caterpillars. By keeping these populations in check, beneficial insects reduce the need for chemical pesticides, allowing for a more organic and sustainable approach to pest management.

Additionally, through their activities, these insects contribute to the pollination of flowers, which is essential for fruit and seed production. This dual benefit - both pest control and aiding in pollination - significantly enhances plant health and productivity.

The other options, while relevant to various aspects of gardening and horticulture, do not accurately represent the primary functions of beneficial insects. They may have indirect effects on factors like humidity or soil quality, but their most recognized and critical roles are centered around managing pests and supporting plant health.