1. Welcome to Ridley Creek State Park Invasive Plants Workshop*
07/16/96
Welcome to Ridley Creek State Park Invasive Plants Workshop *

2. Welcome and Introduction
Roger McChesney, Park Superintendent
Tim Higgins, President, Friends of Ridley Creek State Park

3. Goals Understand what invasive plants are
Understand how they impact the local environment
Learn how to identify invasives
Determine strategies for control/management

4. What are Invasive Plants??
Reproduce rapidly
Spread over large areas
Few, if any, natural controls
Share important characteristics
Spread aggressively by runners or rhizomes
Produce large numbers of seeds that survive to germinate
Disperse seeds away from parent plant via wind, water, wildlife, people

5. How do invasives impact the local environment??
Displace native plants including some very rare species
Reduce food and shelter for native wildlife
Eliminate host plants of native insects
Compete for native plant pollinators
Affect recreational activities

6. Identifying Invasives*
07/16/96
Identifying Invasives
Multiflora Rose
Flowers in April; plant in July; foliage in August *

7. Identifying Invasives*
07/16/96
Identifying Invasives
Garlic Mustard
Inflorescence; understory incursion *

8. Identifying Invasives*
07/16/96
Identifying Invasives
Japanese Knotweed
Foliage; foliage and flowers *

9. Identifying Invasives*
07/16/96
Identifying Invasives
Japanese Stilt Grass (also known as Nepalese Browntop)
Foliage; infestation *

10. Identifying Invasives*
07/16/96
Identifying Invasives
Autumn Olive
Plant; foliage and fruit *

11. Identifying Invasives*
07/16/96
Identifying Invasives
Japanese Barberry
Foliage; understory incursion *

12. Identifying Invasives*
07/16/96
Identifying Invasives
Wine berry (also known as Wine Raspberry)
Stem and foliage; infestation *

13. Identifying Invasives*
07/16/96
Identifying Invasives
Winged Burning Bush
Fruit and foliage in November; plant in April; plant in December *

14. Identifying Invasives*
07/16/96
Identifying Invasives
Mile-a-minute Weed
Foliage; infestation; flowers inside cup-like leaf bracts *

15. Identifying Invasives*
07/16/96
Identifying Invasives
Tree of Heaven
Foliage; mature tree in early July;infestation along roadside; seed pods; *

16. Emerging Invasives in Ridley Creek State Park

17. Identifying Invasives*
07/16/96
Identifying Invasives
Kudzo
Flower and leaves in July; foliage; flower and seed pods in September; seed pods in November *

18. Identifying Invasives*
07/16/96
Identifying Invasives
Porcelainberry (also known as Amur peppervine)
Fruit and foliage; investation *

19. Identifying Invasives
Japanese Hop

20. Glossary
Alien, exotic, foreign, introduced – all the same as non-native.
Non-native – a species that due to direct or indirect human activity, occurs in locations beyond its known historical or potential natural range. Refrs to species from another continent region, ecosystem, or habitat.

21. Glossary (continued) Indigenous – same as native
Native – a species that naturally occurs in a particular region, ecosystem and habitat. Species native to North America are generally recognized as those occurring on the continent prior to European settlement.

22. Glossary (continued)
Weed – a subjective word used to describe any plant growing wherever someone wishes it did not; can include native and non-native plants.
Noxious weed – a legal designation used specifically for species that have been determined to be major pests of agricultural systems and are subject, by law, to certain restrictions.

23. Glyphosate - a type of systemic herbicide; e. g
Glyphosate - a type of systemic herbicide; e.g., Roundup, for land or Rodeo for wetlands or near water.
Biological control – the use of living organisms – parasites, pathogens, or predators – to control an invasive or other pest species.
Systemic herbicide – an herbicide that is absorbed by a plant and carried throughout the tissues.
Pest – a plant, animal, or other organism considered harmful.

24. More information Future invasives sessions at RCSP Websites:

25. Thank you for coming!!
Enjoy your Park!

26. Friends official website…