I'm in Zone 8, sowed my Tennessee coneflower seeds on March 7 and had germination on April 18. The seeds were a couple of years old so I didn't have a great germination rate, but did get a few.

I WS'd a lot of BES vine last year and didn't get sprouts until later than almost everything else.

I got a TON of Ech TN sprouts and they have been planted out here in Columbus for several weeks. They are growing like weeds.

We have a great friend of the Newbie Seed Project who donates a ton of TN Ech every year and most newbie Packs have some seeds in them.