bright yellow, 5 petals, 5 light green/yellow sepals, mass of yellow stamens in the center, borne in cymes
Fruit
seed capsule
Leaves
narrow, blue green
Dimensions
3-4 feet by 3-4 feet (HS), upward arching
Native Site
species endemic to Great Lakes region, USA
Cultivar Origin
Introduced by Dr. Paul Cappiello. Director of Yew Dell Gardens, in Crestwood, Kentucky (USA)
Misc Facts
"Genus name honors Peter Kalm, a student of Linnaeus, who reportedly discovered the species plant in the wild in North America in the mid-1700s". (#144)
Author's Notes
I have seen this Hypericum on a few occasions. It definitely has some of the bluer leaves of all the Hypericum I have seen.
Notes & Reference
#01-Manual of Woody Landscape Plants (Michael Dirr), #144-Missouri Botanical Gardens web site (www.missouribotanicalgarden.org)