St. John's Wort

Hypericum calycinum

St. John's Wort
St. John's Wort St. John's Wort St. John's Wort St. John's Wort

An attractive evergreen dense groundcover that is not invasive!  Deep green oval leaves and golden yellow flowers with pincushion like centered stamens in late spring and early summer.  One of the nicest groundcovers when in bloom.  Most content in cooler areas away from drying winter winds, although quite tough once established. 

Growing & Maintenance Tips:

Easily grown in average, medium, well-drained soil in full sun to part shade. Tolerates wide range of soils. Thrives on sandy soils in full sun. Less floriferous in part shade. Evergreen in warm winter climates. Usually dies to the ground or suffers some tip die back in cold winter climates, but blooms on new growth and comes back nicely each spring. In areas where it does not die in winter, shear or mow plants in late winter or early spring every 2-3 years to renew and induce new growth. Spreads rapidly by underground stems and can be invasive in ideal growing conditions. Plant 18" apart for use as a ground cover.

Flower Color

Bright yellow

Foliage Color

Plant Spread

1.5-2 ft.

Plant Height

1-1.5 ft.

Hardness Zone


Good Companions

Characteristics & Attributes


Ground cover
Rock gardens

Bloom Time


Critter Resistance


Full sun to part shade

Growth Rate

Seasonal Interests

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