Scotch Broom Ecology and
May 23, 2017
A 2017 report commissioned by Washington State agencies
analyzed the ecological and economic impacts of 23 invasive species to Washington's landscapes, agriculture, business, and recreation.
Of the 23 species, Scotch broom is one of the most costly to Washington. The invasive species is a serious threat to native prairies and forests. It prevents timber regeneration and displaces pasture forage for grazing animals. The plant is also toxic to livestock and is a fire hazard. If Scotch broom is allowed to spread an additional 12 percent a year in Washington, it has the potential total economic impact of $142.7 million and the loss of 660 jobs.
To share information that can be used to address and mitigate impacts to Washington’s
economy and natural resources, the Washington State Invasive Species Council in partnership with the Snoqualmie Tribe Environmental and Natural Resources Department, Washington State agencies, the Scotch Broom Working Group, King County Noxious Weed Control Program, and a consortium of researchers will hold a statewide Scotch Broom Ecology and Management Symposium.
The symposium will be held at the Snoqualmie Casino Grand Ballroom in Snoqualmie, Washington, just 30 minutes east of Seattle. Learn more about getting there, including directions, the SnoCasino Express, and weather conditions.
Breakfast Buffet, Coffee, and Networking (8:00 a.m. to 9:00 a.m.)
Welcome and Keynote Address (9:00 a.m. to 9:40 a.m.)
Welcome by Snoqualmie Tribe Environmental and Natural Resources Department
Scotch broom in Washington: Overview and scale of the problem
Session I: Scotch broom ecology and impacts (9:40 a.m. to 12:00 p.m.)
Scotch broom biology and patterns of invasion
Scotch broom insect interactions, with a focus on pollination rates, seed set and seed predation
Overview on Herbicide options and efficacy
Impacts through soil legacies: nitrogen, allelopathy, mycorrhizae, and secondary invaders
Impacts and spread in riparian areas with consequences for salmon habitat quality
Impacts on sensitive species and rare habitats
Lunch Break and Networking (Lunch on Own) (12:00 p.m. to 1:00 p.m.)
Session II: Scotch broom management and restoration (1:30 p.m. to 2:20 p.m.)
Integrated Pest Management (IPM): Site considerations and options for prevention and treatment
Suppressing establishment by manipulating microclimate with logging slash and herbicide
Fire effects: Scotch broom fuel and fire behavior, considerations for fire management
Afternoon Coffee and Poster Session (2:00 p.m. to 2:20 p.m.)
Session II Continued: Scotch broom management and restoration (2:20 p.m. to 5:00)
Mechanical control alternatives to herbicide use across life cycles
Prescribed fire as tool to manage Scotch broom in prairies
Model clean gravel protocols of the Olympic National Forest
Regulatory and horticultural industry perspective
Perspective of the commercial timber industry
Restoration: Moving beyond control
Registration is now open! You must pre-register to attend this symposium. There is no cost for registration, but the maximum capacity is 300 people. Fill out the registration form today, once maximum capacity is reached registration will be closed.
Continuing Education Credits
Symposium attendees are eligible to receive Washington State and Oregon State Pesticide Applicator Recertification Credits through the Washington State Department of Agriculture and Oregon State Department of Agriculture, respectively. While credits have not yet been awarded, we have requested six recertification credits for the symposium.
No blocks of rooms have been set aside for this symposium, you are responsible for your own lodging. Learn more about lodging options around the Snoqualmie Casino.
The first 200 registrants will be eligible to participate in a free breakfast buffet, generously provided by the symposium sponsors.
Lunch will not be provided, participants will be responsible for bringing or procuring their own individual lunches. There are various lunch options within the Snoqualmie Casino and in the surrounding area.
Host and Sponsors
- Scotch Broom Working Group
- 10,000 Years Institute
- University of California, Santa Cruz
- Northern Arizona University
- National Science Foundation DEB 1354985
- King County Noxious Weed Control Program
- Washington Invasive Species Council
- Washington State Noxious Weed Control Board
- Washington State Department of Agriculture
- Washington State Department of Transportation
- WSU Extension APHIS PPQ RAIN4 Project
- U.S. Department of Agriculture Animal and Plant Health Inspection Service
Plant Protection and Quarantine
- Crop Protection Services, Timberland Division
Interested in becoming a symposium sponsor? Contact Jill Silver at firstname.lastname@example.org.
This meeting offers an exciting opportunity to display your organization's projects or programs and to connect one-on-one with people active in Scotch broom research and management.
We anticipate up to 300 attendees from throughout the region during the day-long symposium. Attendees will include students, researchers and natural resource professionals from a wide variety of disciplines and geographies. We expect the symposium to draw people from tribal, federal, state, and local governments; noxious weed control boards; conservation districts; regional fisheries enhancement groups; utilities; businesses; and nonprofit organizations, as well as volunteers, and private landowners.
Exhibitor space is approximately 10' by 5' and includes one draped, 10-foot table, a trash can and two chairs.
Exhibitor set-up will be May 23, 2017 between 7 a.m. and 8 a.m.
Exhibitor tear-down will be May 23, 2017 between 5:00 p.m. and 6:00 p.m.
The Snoqualmie Casino meets the Americans with Disabilities Act requirements and is fully accessible. People with disabilities needing an accommodation to participate in the symposium are invited to do one of the following:
- Indicate the accommodation during the registration process
- Contact the Washington Invasive Species Council by calling 360-902-3088, TTD 360-902-1996, or e-mailing email@example.com
- Use 711 relay service
Accommodation requests by telephone, e-mail, or 711 relay service should be received at least 5 business days before the conference to ensure availability. Please provide 2 weeks notice for requests to receive information in an alternative format and for ASL/ESL interpretation requests.