Water Primrose (unknown species) (Ludwigia spp.) on Sep 17, 2013
Submitter does not have a specimen
EDRR Status: Local expert notified
Description of specimen
Appears to be Ludwigia hexapetala,, the same weed choking the Delta Ponds. It has entirely colonized this whole pond which used to be clear of weeds.
Commentary
Expert Reviewer
Tania Siemens
WISE Program Coordinator (Watershed and Invasive Species Education)
Oregon Sea Grant Extension
Oregon State University
tania.siemens@oregonstate.edu
541-914-0701
Thank you for reporting water primrose willow to the hotline. Water primrose willow is an aggressive aquatic invasive plant that is causing problems in many water ways in Oregon. Its population is expanding and it is important to try to prevent its spread. I will share your report with local invasive species managers at the City of Eugene. I am sure they will be very glad to learn of your report so they can incorporate this into their management strategy for this and other aquatic invasive plants. Thanks for your report, please keep on reporting invasive species that you find.
Sincerely,
Tania
Tania Siemens
Watershed and Invasive Species Education (WISE) Program
Oregon Sea Grant
Oregon State University
cell: 541-914-0701 email: tania.siemens@oregonstate.edu
Tania Siemens
Sept. 17, 2013, 10:33 p.m.