Expert advice from Bob Vila, the most trusted name in home improvement, home remodeling, home repair, and DIY. Tried, True, Trustworthy Home Advice

A soothing favorite for centuries, lavender repels fleas, moths, mosquitoes, and many other insects. While oil extracted from the flowers makes an effective mosquito repellent, just the plant itself can ward off unwelcome insects. As you're arranging lavender plants around your outdoor seating areas, don't forget to position one close to a doorway to help prevent houseflies from entering.

Related: 9 Calming Colors for a Serene Home