Kalm's St. John's Wort
Hypericum kalmianum
Description
Blooms golden-yellow flowers. Green foliage.
Bloom Period: Late Spring into Summer
Growth Habit: Dwarf and rounded
Mature Height: 2' to 2.5' (60 cm to 75 cm)
Mature Spread: 2' to 2.5' (60 cm to 75 cm)
Growth Rate: Slow
More Details
Sun Exposure: Full sun to partial shade
Cold Hardiness Zone: 4
Drought tolerant
Long blooming
Attracts butterflies
Landscape Uses: Foundation planting, container and garden
Native to Ontario
