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Kalm's St. John's wort (Hypericum kalmianum) is a small, low-growing, sun-loving shrub with bright yellow flowers. It's native to the Great Lakes region of North America.
Appearance
Low-growing, dense shrub that can grow to be 2–4 feet tall
Upright branching
Deciduous, meaning it seasonally loses leaves
Blue-green leaves that are narrow and linear-oblong
Five-petaled, golden yellow flowers that bloom in mid to late summer
Growing conditions
Prefers full sun
Tolerates dry conditions and sandy soil
Well-adapted to growing in moist, alkaline soils
Found naturally growing along lakes, rivers, and cliffs
Other characteristics
Has a shallow, spreading root system
The fruit is a 5-chambered capsule about ¼ inch long, tear-drop to pyramidal in shape
The capsule turns dark red as it matures
The genus name comes from the Greek words hyper meaning "above" and eikon meaning "picture"
Pollination
Various bees pollinate the plant as they collect nectar from the flowers
Kalm's St. John's wort (Hypericum kalmianum) is a small, low-growing, sun-loving shrub with bright yellow flowers. It's native to the Great Lakes region of North America.
Appearance
Low-growing, dense shrub that can grow to be 2–4 feet tall
Upright branching
Deciduous, meaning it seasonally loses leaves
Blue-green leaves that are narrow and linear-oblong
Five-petaled, golden yellow flowers that bloom in mid to late summer
Growing conditions
Prefers full sun
Tolerates dry conditions and sandy soil
Well-adapted to growing in moist, alkaline soils
Found naturally growing along lakes, rivers, and cliffs
Other characteristics
Has a shallow, spreading root system
The fruit is a 5-chambered capsule about ¼ inch long, tear-drop to pyramidal in shape
The capsule turns dark red as it matures
The genus name comes from the Greek words hyper meaning "above" and eikon meaning "picture"
Pollination
Various bees pollinate the plant as they collect nectar from the flowers