GardenSmart Oregon For Master Gardeners

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GardenSmart Oregon is a publication about invasive species and gardening alternatives to invasive plants. It also includes a "to do" list for gardeners.

GardenSmart Oregon is a publication about invasive species and gardening alternatives to invasive plants. It also includes a "to do" list for gardeners.

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  • 1. GardenSmart Oregon
    A Guide to Non-Invasive Plants
    Download at:
    http://extension.oregonstate.edu/catalog/pdf/ec/ec1620.pdf
    Linda R McMahan, OSU Extension Service, Yamhill County
    OSU Plant ID Pictures used by permission of Patrick Breen © Oregon State University
  • 2. This publication is a “landmark collaboration” among many organizations, including the City of Portland, Oregon Public Broadcasting, the Oregon Association of Nurseries, and the OSU Extension Service
  • 3. Part of “The Silent Invasion”
    GardenSmart was part of a campaign throughout Oregon to raise awareness about invasive species.
    The following slide shows the Oregon Public Broadcasting webpage on this campaign, called “The Silent Invasion” as it appeared last year.
    As an exercise, visit the current website and explore it for additional information.
  • 4. http://www.opb.org/programs/invasives/
  • 5. Invasive Facts – Invasive Species are A Serious Problem
    Invasive Species Defined - a species that is non-native or alien to the ecosystem under consideration and whose introduction does or is likely to cause economic or environmental harm or harm to human health
    http://www.wildflower.org/invasive/PW_Brochure.pdf
  • 6. Invasive Facts http://www.wildflower.org/invasive/PW_Brochure.pdf
    • Invasive species are the # 1 threat to
    native biodiversity on protected lands
    • Invasive plants are spreading over
    approximately 1,729,730 acres per year of U.S. wildlife habitat
    • Scientists estimate that invasive plants cost our economy $35 billion or more in damages and treatment each year
  • 7. The identity of some of our Invasive Species May Surprise You
    For example, take a look at the poster shown on the next slide. This was published by the City of Springfield, Oregon
  • 8. A new “look” at butterfly bush courtesy of the City of Springfield OR
    http://www.ci.springfield.or.us/ESD/ButterflyBush.jpg
  • 9. So Why is Gardening so Important for Invasive Species?
    The plants featured in GardenSmart Oregon were introduced intentionally, primarily for gardens and landscapes
    4,000 or more plant species are introduced into the US, 1 in 10 have become invasive, and half of these are of horticultural origin
  • 10. Here are Some of the Gardening Pathways for Invasive Plants
    Intentional planting for ornamental value, such as butterfly bush
    Seed mixes that contain plants with invasive potential or unintended weed seeds
    Weed seeds as contaminants in bird seed
  • 11. A Closer Look at GardenSmart Oregon
  • 12. GardenSmart Oregon features information about known invasive plants and provides garden alternatives
    Included is one featured native plant and several additional Oregon native plants for each invasive ornamental
    One featured “ornamental” plant and other alternatives as well
  • 13. Butterfly bush as shown in GardenSmart Oregon
  • 14. Butterfly bush Invading a creeksidein Oregon’s lower elevation Cascades
    Photo courtesy of Brad Withrow-Robinson, OSU Extension, used by permission
  • 15. GardenSmart Featured Native Plant: Blueblossom
    Ceanothusthyrsifolius
    http://oregonstate.edu/dept/ldplants
  • 16. GardenSmart Featured Ornamental Alternative
    Meyer lilac – Syringameyeri
    http://oregonstate.edu/dept/ldplants
  • 17. Another ornamental that has become invasive: English ivy – Hedera helix – invading Forest Park in Portland
  • 18. Another Exercise
    Visit the OSU Extension Yamhill County Site to view a fact sheet on controlling English Ivy. http://extension.oregonstate.edu/yamhill/controlling-invasive-plants
  • 19. GardenSmart Featured Native – Dunes Strawberry
    Fragariachiloensis
    http://oregonstate.edu/dept/ldplants
  • 20. Gardensmart Featured Ornamental – Allegheny Spurge
    Pachysandra procumbens
    http://oregonstate.edu/dept/ldplants
  • 21. Creeping raspberry
    Rubuscalycinoides
    http://oregonstate.edu/dept/ldplants
  • 22. What You as Gardeners Can Do
    Learn about invasives. Read GardenSmart Oregon
    Start at home. Remove invasive species or interrupt their reproduction by deadheading or other methods
    Don’t trade invasive plants with other gardeners
    Check the contents of seed mixes before you purchase or plant them
  • 23. What You as Gardeners Can Do (More)
    Support nurseries that offer alternatives to invasive plants
    Be especially careful if you have a water garden to keep plants from entering native waterways
  • 24. What You as Gardeners Can Do (More)
    Share the word with other gardeners
    Join a local group that helps eliminate invasive plants from natural areas
    Dispose of invasive plants appropriately
    Check plant pots before you plant them to catch the “hitchhikers”
  • 25. Some things I learned from Working on GardenSmart. . .
    The featured native plants tend to be more drought tolerant than the “ornamentals”
    Many of the plants often recommended are invasive somewhere in the world
    US natives from other states are showing fewer invasive tendencies in the rest of the US than are Asian and European species
  • 26. Thank You!
    Yellow Flag Iris, a recently listed Oregon invasive plant
    I hope you have enjoyed this brief introduction to GardenSmart Oregon and Invasive Species Information
    Stay tuned to new information on invasive species as it emerges