Our bleeding hearts are ready!  Normally they will bloom about a month later when coming back from the previous year.  We are currently hardening them off in an unheated cold frame.  They are in a 300 pot-which I is approx 7" wide by 7.25" tall.  If you are planting them soon, if we get an extreme frost, they should be covered.
 
 
Information
Height: 24–36 inches (2–3 feet).
Spread: 18–36 inches (2–3 feet).
Sun: Partial to full shade; tolerates morning sun, but prefers shade in the afternoon.
Bloom Time: Late spring to early summer (April–June).
Attributes: Heart-shaped flowers on arching stems, deer/rabbit resistant, attracts hummingbirds, cut flower. Goes dormant/disappears in mid-summer.
Zones: USDA Hardiness Zones 3–9.