Great St. Johnswort

Hypericum pyramidatum
Millepertuis
Perennial
Native to Canada
Forests, meadows, borders
Full Sun
Sandy Loam / Loam / Clay- Moisture Well drained, medium to moist
Up to 5 feet (160 cms)

Blooms in:

Summer - Zone 5

Bloom Colors:

Yellow

Attracts:

Bumble bees

Overview

 

Magnificent vivacious plant with flowers that can be up to 5cm wide. Easy to cultivate, prefers damp soil and full sun. It can grow very tall with the rich soil conditions.

The top of the upper stems will terminate/branch into 1-5 short stems, each with a single flower.

Used in borders, woodland margins or slopes.

 

Companion Plants

Try pairing Hypericum prolificum with Aster oblongifolius, Hibiscus moscheutos, Monarda fistulosa.

Care Checklist

Easily grown in moist, well-drained soils in full sun to part shade.

Cut off seed heads to prevent spread. Pull unwanted volunteers in Spring.

 

Links for Further Information

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