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yellow bloomer #635952

Asked May 15, 2020, 12:11 PM EDT

I'm wondering what this wild flower is, among my iris. Pam

Hennepin County Minnesota

Expert Response

Hi,
I think it is yellow rocket - a member of the mustard family: https://www.minnesotawildflowers.info/flower/garden-yellow-rocket
Thank you for your inquiry and good luck! Replied May 15, 2020, 4:27 PM EDT
Is this an invasive weed?
The Question Asker Replied May 15, 2020, 9:04 PM EDT
This is from the information I sent earlier: arden Yellow Rocket is a pest plant from Eurasia that doesn't typically invade high quality habitat, but thrives in disturbed soil such as along roadsides, fields and construction sites. It can form large colonies, but scattered plants are encountered as well. It is a common sight along roadsides in spring, like the massive infestation found along a county road in Washington County (see image below). It is very similar in nearly all respects to the native American Yellow Rocket (Barbarea orthoceras); while there are small differences in flower size, leaf shape and fruit arrangement, it is most easily distinguished by at least some stem leaves having a fringe of hairs around the auricles, where Garden Yellow Rocket auricles are all hairless.
Thank you for your inquiry and good luck! Replied May 16, 2020, 11:04 AM EDT

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