Hello all, has anyone in zone 6b or colder had Rudbeckia Hirta ('Indian Summer' and 'Autumn Colors') return as a perennial? This was my first year with them and I started them in March inside. During the summer, there were huge 5"-7" blossoms all season and they were gorgeous. I am wandering whether I should start more indoors just in case when the time come. I know they re-seed, but I like large or established plants without waiting on the seedlingd to emerge.
Thanks in advance