Based in Seattle, Washington, Perennial Planning and Garden Design provides comprehensive landscape planning and installation services for both residential and commercial properties. From intimate garden spaces to large-scale transformations, our projects span planting design, hardscape installations, and everything in between.

We offer a full suite of landscape services, including:

  • Custom hardscape design and installation

  • Landscape lighting

  • Irrigation systems

  • Backflow installation and testing

  • Drainage solutions

  • Seasonal and container gardens

  • Year-round landscape maintenance

As a licensed, bonded, and insured general contractor in the state of Washington, Perennial Planning brings experience, professionalism, and creativity to every project.

Meet the Team


Carol, founder of Perennial Planning and Garden Design, launched the company in 1993 shortly after earning her degree in Urban Planning and Landscape Design from the University of Washington. What began as a small container garden business has since grown into a full-service firm with multiple landscaping teams and a dedicated lighting and irrigation crew.

Driven by a deep love for gardening and the natural environment, Carol brings passion, expertise, and a thoughtful approach to every project. She has shared her knowledge through numerous public lectures and webinars, covering topics such as container gardening, shade garden design, and landscape renovation.

Her work has been featured in Luxe Magazine (2020 and March 2021), Seattle Times’ Pacific Northwest Magazine, Remodeling Magazine, Landscape Solutions, and Windermere’s Exceptional Properties, and she has been recognized as a LUXE Gold List designer.

Carol is an active member of the Washington Association of Landscape Professionals, the Washington Park Arboretum, Bellevue Botanical Garden, and the Seattle Garden Club, and has served on the board of the Northwest Horticultural Society.

With a legacy of beautifully renovated gardens across the Seattle area and beyond, Carol has helped hundreds of clients reimagine their outdoor spaces—bringing lasting beauty and functionality to the places they call home.