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Hypericum kalmianum

Phonetic Spelling
hy-PER-ih-kum kal-mee-AH-num
Description

Drought tolerant; more loose and open than other hypericum; most cold-hardy hypericum

range of soil types; tolerates dry soil.

Quick ID Hints:

  • Stems 2-4 ridged on newer growth
  • Leaves paired or whorled, sessile or short-stalked
  • 5-petaled yellow flowers with numerous stamens

Deciduous or evergreen shrub, small tree or herb. There are around 400 species of Hypericum, which include herbs, shrubs and trees, with different bloom times and cultural requirements.

See this plant in the following landscape:
Cultivars / Varieties:
'Deppe'
Tags:
#deciduous#drought tolerant#yellow flowers#cold tolerant#blue green leaves#fantz#compact habit
 
Cultivars / Varieties:
'Deppe'
Tags:
#deciduous#drought tolerant#yellow flowers#cold tolerant#blue green leaves#fantz#compact habit
  • Attributes:
    Genus:
    Hypericum
    Species:
    kalmianum
    Family:
    Hypericaceae
    Life Cycle:
    Woody
    Dimensions:
    Height: 2 ft. 0 in. - 4 ft. 0 in.
    Width: 3 ft. 0 in. - 4 ft. 0 in.
  • Whole Plant Traits:
    Plant Type:
    Shrub
    Woody Plant Leaf Characteristics:
    Deciduous
    Habit/Form:
    Dense
    Erect
    Rounded
    Texture:
    Medium
  • Cultural Conditions:
    Light:
    Full sun (6 or more hours of direct sunlight a day)
    Partial Shade (Direct sunlight only part of the day, 2-6 hours)
    USDA Plant Hardiness Zone:
    4b, 4a, 5b, 5a, 6b, 6a, 7b, 7a
  • Fruit:
    Fruit Type:
    Capsule
    Fruit Description:
    A (2)3-5 celled capsule, sometimes fleshy.
  • Flowers:
    Flower Color:
    Gold/Yellow
    Flower Inflorescence:
    Cyme
    Flower Bloom Time:
    Summer
    Flower Size:
    1-3 inches
    Flower Description:
    Solitary or cymose, terminal or axillary. Yellow (usually) 5-petaled (rarely 4), 5 sepals (rarely 4); stamens numerous, in bundles or in showy boss.
  • Leaves:
    Woody Plant Leaf Characteristics:
    Deciduous
    Leaf Color:
    Blue
    Green
    Leaf Type:
    Simple
    Leaf Arrangement:
    Opposite
    Whorled
    Leaf Margin:
    Entire
    Hairs Present:
    No
    Leaf Length:
    1-3 inches
    Leaf Width:
    < 1 inch
    Leaf Description:
    Opposite or whorled, decussate, simple, entire; sessile or petiole short.
  • Stem:
    Stem Color:
    Green
    Stem Is Aromatic:
    No
    Stem Description:
    Contain 2 to 4(up to 6) ridges on newer growth, smooth and rounded on older growth.