Land Plants - invasive

Ivy, English or Atlantic (Hedera helix or Hedera hibernica) on Jun 29, 2011

Submitter has sample
EDRR Status: Local expert notified

Description of specimen

plants start out tiny, soft foliage, dark red and green at first, they spread fast (i don't know how because i never see seeds and they don't flower until they are roughly 12 inches tall) they have very fine roots, so pull easily, but i'm sure leaving lots of small roots behind. foliage is sensitive to herbicides, but no weed preventers keep them from coming back, even for a little bit. this is just one of my unidentifieds!

Commentary

I have other unidentnifieds that I have suspected species names, but I am no plant expert, so need help confirming... but here they are:

Smallseed falseflax?

Giant

Common groundsel

Velvetleaf? or morning glory?
field bindweed
spiney emex
yellow hawkweed
perennial pepperwood
Himalayan balsam?? (red speckled veins, broad textured leaf) this is the closest thing i could find to what is actually growing
Creeping yellow cress
wild blackberry
Other grassy weeds
Coltsfoot

Reporter
June 29, 2011, 3:04 p.m.

June 30, 2011

Good Morning Teresa,

I wanted to thank you for reporting your weeds to the Oregon Invasives Hotline. We appreciate your attention to invasive species issues and welcome your input. It is great to see landowners like yourself, taking the initiative to identify and control invasive species.

You have described a number of potential invasive species issues that require a variety of management strategies. As such it is probably better to work with you individually through the Clackamas Soil and Water Conservation District's WeedWise program to develop a response that will best fit your resource concerns.

The Clackamas County Soil and Water Conservation District is a non-regulatory organization, which offers technical assistance to local landowners at no cost. Our focus is to facilitate effective and efficient land management practices that will cultivate Clackamas County as a place where our community, environment, and economy can thrive together.

One of the principle concerns within the county is the growth and spread of invasive species. These aggressive invaders decrease the livability of Clackamas County, adversely impact our native plants and animals, and impose an economic hardship on local land managers and producers. As such, we have developed the Conservation District’s WeedWise program to help address these invasive species concerns within the county.

Please contact me directly so we can arrange a time to review the invasives on your property and develop a plan that will work for you.

If you are interested in identifying some of your invaders yourself please check out the Weeds of the Willamette Valley field guide developed by the Institute of Applied Ecology (http://appliedeco.org/invasive-species-resources/weed-guides/WeedGuide_WV/WV%20weed%20guide%20web%20view%20version.pdf) that can be viewed online.

King County, Washington also has an excellent weed database broken down by flower color (http://www.kingcounty.gov/environment/animalsAndPlants/noxious-weeds/weed-identification.aspx) which is useful for identifying plants. So if you are interested in learning more these are two great resources.

Thanks again for taking the time to report your weeds to the hotline. It is always a pleasure to work with enthusiastic landowners like yourselves.

Sincerely,


Samuel Leininger
WeedWise Program Manager
Clackamas Soil & Water Conservation District
221 Molalla Ave. Suite 102
Oregon City, OR 97045
503-210-6006
sleininger@conservationdistrict.org
www.conservationdistrict.org

Samuel Leininger
June 30, 2011, 1:41 a.m.