Kalm's St. John's Wort
Hypericum kalmianum

Family: Clusiaceae
Genus: Hypericum (hy-PER-ee-kum) (Info)
Species: kalmianum (kal-mee-AH-num) (Info)

Category:

Groundcovers

Shrubs

Height:

24-36 in. (60-90 cm)

Spacing:

24-36 in. (60-90 cm)

36-48 in. (90-120 cm)

Hardiness:

USDA Zone 4a: to -34.4 C (-30 F)

USDA Zone 4b: to -31.6 C (-25 F)

USDA Zone 5a: to -28.8 C (-20 F)

USDA Zone 5b: to -26.1 C (-15 F)

USDA Zone 6a: to -23.3 C (-10 F)

USDA Zone 6b: to -20.5 C (-5 F)

USDA Zone 7a: to -17.7 C (0 F)

USDA Zone 7b: to -14.9 C (5 F)

Sun Exposure:

Light Shade

Partial to Full Shade

Danger:

Unknown - Tell us

Bloom Color:

Bright Yellow

Bloom Time:

Mid Summer

Foliage:

Deciduous

Other details:

Unknown - Tell us

Soil pH requirements:

Unknown - Tell us

Patent Information:

Non-patented

Propagation Methods:

Unknown - Tell us

Seed Collecting:

Unknown - Tell us

Regional

This plant has been said to grow in the following regions:

North Chelmsford, Massachusetts

Pittsboro, North Carolina

Corning, Ohio

Gardeners' Notes:

No details have been posted.