Hi, Darcy. Thanks for the report. Sadly, yellow-flag is outside our ability to manage on any kind of basis. The best approach, at this stage, is really to strike up conversations with owners or employees and find out their current goals. Often folks with yellow-flag take the trouble to clip & bag seedheads after flowering. It'd be interesting to know if that's the case here.

As always, feel free to reach me directly at mitch.bixby@portlandoregon.gov.

-Mitch

Mitch Bixby
May 19, 2016, 7:37 a.m.