Marianne Binetti
MARIANNE BINETTI has a degree in Horticulture from Washington State University and writes a syndicated gardening column that reaches more than one million readers. She is a regular guest on HGTV and is also a popular speaker at garden centers and horticulture societies throughout Washington and Oregon.

Don Williamson
DON WILLIAMSON, the author or coauthor of more than a dozen popular gardening guides, has a degree in horticultural technology and professional certificates in turf management. He has extensive experience designing and constructing both perennial and annual beds in formal landscape settings.