Too late for me I pulled them up. This is good info to spread on the GW.

Cool! I didn't know they like salvia seeds. Have you seen them on any others?

Of course, the finches always love the echinaceas. Most of these seed heads are already gone. When I walked past where they were, the birds would fly up out of the border....I finally realized they were eating the seeds of flowers.

I will pay closer attention. I left tons of bronze fennel seeds on....will check and see if they are gone.