A Master Gardeners’ recommendations are made only after consulting research based information. Oregon State University’s premier Horticulture program is the first check when addressing a gardening question. Below are links to many of the authorities used when addressing home horticulture questions.
General Gardening Questions
Plant & Weed Identification
- OSU Broadleaf Plant Search
- Common Trees of the Pacific Northwest
- Weed Identification (University of California)
- Weed ID Gallery (University of California
Insect & Spider ID
- PNW Pest Managment Handbooks
- Washington State University HortSense
- UC IPM (home garden, turf and landscape pests)
Pesticide Resources