Beginner Gardening: New to Dahlias - Need some TIPS, please...., 1 by 2_pelo

2_pelo wrote:
I've just purchased several .75 pt. Dahlias. (photo file attached). I'm planning on growing them in a (plastic) balcony planter's box. The ID card states that they need moist soil, will grow from 10" to 18" - and - require morning sun o.n.l.y. They will have a direct Southern exposure & their new home is in Northern Illinois.

Can someone give me some tips on succeeding with these flowers? I'd be very greatful.