For very large groups of plants such as ferns, rhododendrons, or roses, GPP contacts specialty plant experts and works with them to prepare a list of recommendations for GPP selections.
Current active Advisors include:
Clematis
- Linda Beutler, Friends of the Rogerson Clematis Collection, Oregon
- Maurice Horn, Joy Creek Nursery, Oregon
Ferns
- Michelle Bundy, Casa Flora Nursery, Washington
- Kirk Hansen & Thomas Johnson, Sebright Nursery, Oregon
- Sue Olsen, Foliage Gardens Nursery, Washington
- Richie Steffen, Elisabeth C. Miller Botanical Garden, Washington
- John van den Meerendonk, Botanica Landscaping - retired, Washington