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.

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.
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