Lesser Celandine (Ranunculus ficaria) on May 20, 2019
Submitter does not have a specimen
Description of specimen
The yellow flowers are typical. The plants are now dying out as is typical this time of year.
Commentary
None
Remedy
For small patches, plants can be dug up in their entirety (be sure to get all roots and the small bulbils that break off to form new plants - you may need to sift through your soil to get these). Do not compost or put in your yard debris bin any below-ground parts of the plant (tubers and bulbils) as they can be spread this way. The leaves and flowers are ok to compost or put in yard debris. For larger patches, digging is impractical and can cause a lot of disturbance; herbicide application may have more success.
* Lesser Celandine: National Park Service fact sheet
*Lesser Celandine info from West Multnomah SWCD
There are two patches of Lesser Celedine along the trail portion of Northwoods.
Expert Reviewer
Mrs. Lindsey Wise Oregon Biodiversity Information Center, inr.oregonstate.edu/orbic Oregon iMapInvasives Institute for Natural Resources Portland State University