Nursery and Landscape Professionals
A research-based resource for nursery and landscape professionals or enthusiasts interested in commercial ornamental horticulture in Idaho.
Idaho nursery and landscape professionals may contact us for assistance with nursery-related issues. For professional horticulturists outside of Idaho, select Extension throughout the U.S. below.

Articles
Diagnosing plant problems — an analytical approach
- Causes of plant problems
- Characteristics of diseases and insects
- Construction damage and environmental extremes
- Diagnosing plant problems
- Types of plant stress
Notes
- Apple scab
- Aspen leaf spot
- Bacterial canker and gummosis of cherry trees
- Black knot fungus
- Bronze birch borer
- Cooley spruce gall adelgid
- Deer antler rubbing
- Deer browsing
- Dutch elm disease
- Dwarf mistletoe of conifers
- Fairy ring
- Fire blight
- Frost damage
- Fusarium root rot
- Girdling roots
- Hawthorn rust
- Juniper scales
- Large pruning cuts
- Oystershell scale
- Pink turf mold
- Poplar rust
- Powdery mildew
- Root damage
- Salt injury
- Sod webworm
- Wetwood in elms
- Willow leaf galls
Resources
Business
Christmas trees
Fertilization
- Fertilizer primer: Terminology, calculations and application, CIS 863
- Liming materials, CIS 787
- Nutrients plants require for growth, CIS 1124
- Quality water for Idaho: Nitrate and groundwater, CIS 872
- Soil sampling, EXT 704
Irrigation
Lawns and turf
- Northern Idaho fertilizer guide: Northern Idaho lawns, CIS 911
- Southern Idaho fertilizer guide: Southern Idaho lawns, CIS 846
- Starting a home lawn, CIS 1062
- Thatch prevention and control in home lawns, CIS 1063
Pests, diseases and disorders
- Controlling iron deficiency in Idaho plants, CIS 1042
- Management of white pine weevil in spruce, CIS 1133
- Weed control methods for perennial crops, CIS 1026
Plant selection
- Fire-resistant plants for home landscapes, PNW 590 ($3 each for print)
- Landscaping and utilities: Problems, prevention and plant selection, CIS 991
- Specialty flowers: Dry flower production, CIS 992
Propagation
- Propagating deciduous and evergreen shrubs, trees and vines, PNW 152
- Propagating plants from seed, PNW 170
Pruning
Extension publications
Trade and research publications
- Green Roof Infrastructure Industry Association: comprehensive discussion of green roofs, their construction, benefits and has a searchable database for research and policy related to green roof infrastructure.
- American Rainwater Catchment Systems Association: website has a good resource link page.
- Building Soils: contains key soil building steps, best management practices that preserve and improve soil on building sites, grow healthier landscapes and protect waterways.
Nursery and landscape association and organizations
- Idaho Nursery and Landscape Association
- Montana Nursery and Landscape Association
- National Association of Landscape Professionals
- Oregon Association of Nurseries
- Perennial Plant Association
- Utah Nursery and Landscape Association
- Washington State Nursery and Landscape Association
Other
- California Center for Urban Horticulture, UC Davis
- National IPM Network
- Native Plant Network
- Trees of the Pacific Northwest
- USDA Animal and Plant Health Inspection Service
State of Idaho
University of Idaho
- Alabama
- Alaska
- Arizona
- Arkansas
- California
- Colorado
- Connecticut
- Delaware
- Florida
- Georgia
- Hawaii
- Idaho
- Illinois
- Indiana
- Iowa
- Kansas
- Kentucky
- Louisiana
- Maine
- Maryland
- Massachusetts
- Michigan
- Minnesota
- Mississippi
- Missouri
- Montana
- Nebraska
- Nevada
- New Hampshire
- New Jersey
- New Mexico
- New York
- North Carolina
- North Dakota
- Ohio
- Oklahoma
- Oregon
- Pennsylvania
- Puerto Rico
- Rhode Island
- South Carolina
- South Dakota
- Tennessee
- Texas
- Utah
- Vermont
- Virginia
- Virgin Islands
- Washington
- West Virginia
- Wisconsin
- Wyoming
- Nutrient management for containerized and field nursery crops
- Pruning roots during plant production
- Simple chemical tests of potting mixes used for container crops