April 16, 2016

Robert Emanuel

Clean Water Services

IDENTIFYING INVASIVE SPECIES

AGENDA

• What’s the big deal: Impact of invasives

• Intro to management and your role

• Focus species

• Hands-on: SPEED DATING!

• How to report

• POE requests

IMPACT OF INVASIVE SPECIES ON AGRICULTURE, FORESTS & NATURAL AREAS

THE THREAT TO NATURAL AREAS

Invasive species cost Oregonians $125 million/year.

Invasive species cost Americans about $100 billion/year.

Invasive species cost Portland-area residents $31 million/year.

Source: Cusack, C., M. Harte, and S. Chan 2009. The Economics of Invasive Species. Oregon Sea Grant: Corvallis, OR

Are

a In

fest

ed

Time

Escape

IntroductionInvasion

Co

st

Key Stages in Plant Invasions

KEYS TO IDENTIFYING THE INVADERS

• Flowers

• Leaves and stems

• Habit (vine, herb, grass, rosette, etc.)

• Key characteristics (odor, reflectivity, color)

• Developing a “search image”

PRIMARY TARGETS:REPORT THESE ANYWHERE

Steph

an K

uzn

etsov

Glenn Miller, ODA

Garlic Mustard: Alliaria petiolata

Glenn Miller, ODA

Garlic Mustard: Alliaria petiolata

Giant Hogweed Heracleum mantegazzianum

Giant Hogweed Heracleum mantegazzianum

HogweedCow Parsnip

HogweedCow Parsnip

Knotweed Fallopia species

Japanese Knotweed Fallopia japonica

Purple Loosestrife Lythrum salicaria

Purple Loosestrife Lythrum salicaria

Ore

go

n S

tate

Un

ive

rsity

Spurge Laurel: Daphne laureola

Ca

rla C

ole

, NP

S &

Ta

nia

Sie

me

ns, O

reg

on

Se

a G

ran

t

Spurge Laurel: Daphne laureola

Goatsrue: Galega officinalis

Goats

rue

Look-A

likes

SECONDARY TARGETS: REPORT IF FOUND ALONG STREAMS

OR IN PUBLIC PARKS

Orange Hawkweed:

Pilosella aurantiaca

Lesser Celandine Ranunculus ficaria

Yellow Flag Iris Iris pseudacorus

Ph

oto

: Jud

y Scott, O

SU

Italian Lords and Ladies Arum italicum

Yellow Archangel Lamiastrum galeobdolon

Ph

oto

s: W

A S

tate

We

ed

Co

ntro

l Bo

ard

NOW FOR SOME INVASIVE SPECIESSPEED DATING

Report Report in Park or Natural Area

Garlic Mustard Lesser Celandine

Knotweed Yellow Archangel

Giant Hogweed Yellow Flag Iris

Purple Loosestrife Italian Arum

Goatsrue Orange Hawkweed

Spurge Laurel

oregoninvasiveshotline.org

REPORTING ALTERNATIVE

We really prefer website reports, but you can always call or mail info to:

Jennifer Nelson Sneed

Tualatin Soil and Water Conservation District1080 Southwest Baseline StreetHillsboro, OR 97123tualatinswcd@gmail.com

503-648-3174 x121

WEED CONTROL QUESTIONS?

OSU Extension ServiceWashington County

155 N. First Ave, Suite 200Hillsboro, Oregon 97124(503) 821-1150

extension.oregonstate.edu/washington/

DON’T BE A VECTOR!

• Clean your clothes

• Clean your pets

• Clean your equipment & vehicle

• Walk around the infestation

• Bag/trash, burn, no compost

• If collecting voucher in flower or fruit, seal it

J.K. Linsey

QUESTIONS?

SPECIAL THANKS TO OUR HOST