Promoting the Use of Native Plant Species in the Home Landscape

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Kalm St. Johns wort

Plant Leaf

Full Plant

Plant Berry/Flower

Latin Name: Hypericum kalmianum

Flower Description:

Flowers are yellow and numerous, about 1″ wide. They have 5 petals with block dots on each petal and many long, protruding stamens.

FamilyClusiaceae
Season BloomJuly - August
HabitatThe species and common names honor Peter Kalm, a student of Linnaeus, who discovered the plant in America around 1750. This is one of several shrubby St.-Johns-worts, many species are found throughout the South.
CyclePerennial
Height1-3'
Leaf DescriptionLeaves are in pairs and opposite each other. They are stalkless and toothless with tiny translucent dots that may be seen by holding a leaf up to the light. Bark is papery, peeling when older.
Soil Type Dry
Light Source Sun
LocationRain Garden, Woodland