Selecting the right plants for a septic drain field is crucial for its health and longevity. Shallow-rooted trees and shrubs, like dogwoods and redbuds, are excellent choices as their root systems are less likely to invade the drain field. Herbaceous plants, such as wildflowers and grasses, offer several benefits. They have fibrous roots that won't damage pipes and help absorb excess moisture, preventing saturation. Native grasses like switchgrass and wildflowers like coneflowers and black-eyed Susans also enhance the aesthetic appeal. Remember, proper plant selection ensures a well-functioning septic system and a beautiful landscape.