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Photo: Agnieszka Kwiecień, Nova, CC BY 3.0 (via Wikimedia Commons)

Olympic St. John's Wort

Hypericum olympicum

Also known as Mount Olympus St. John's Wort, Dwarf St. John's Wort, Golden Hypericum, Olympic Hypericum

At a glance
Family
Hypericaceae (the St. John's Wort family)
Type
Low, mat-forming perennial subshrub
Parts used
None traditionally used; grown for its flowers and foliage only
Size
6 to 12 inches tall, spreading 12 to 18 inches wide
Bloom
Midsummer into early autumn, bright golden yellow, star-shaped flowers with a starburst of long stamens
Habitat
Rocky limestone slopes and mountain scree of Greece and the Balkans, including the flanks of Mount Olympus itself
Acquisition
Grow
This plant in HerbSense

Key benefits

Cheerful golden summer color
Thrives in poor, rocky soil
Very drought tolerant once settled
Draws bees and pollinators

Traditional uses

Olympic St. John's Wort has never carried the herbal reputation of its famous relative, Hypericum perforatum. It belongs to the same golden-flowered genus, but its own story is a horticultural one rather than a medicinal one. European plant collectors brought it down from the rocky heights of Greece and the Balkans in the nineteenth century, prized purely for its cheerful, sun-colored blooms and its willingness to thrive where little else would grow. Rock gardeners have treasured it ever since as a tough, low mat of gold for the hottest, driest, stoniest corners of the garden.

How to grow & use it

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Pairs well with
  • Creeping thyme
  • Sedum
  • Lavender
Substitutes
  • Hypericum perforatum (common St. John's Wort), the closely related species that carries the well-documented traditional and herbal history this ornamental cousin does not
Choose it when

You want a patch of mountain gold that asks for almost nothing but sun and stone.

Did you know?

This little shrub takes its name quite literally from Mount Olympus, where it was first collected clinging to sun-baked limestone crags, close to the mythical home of the Greek gods.

Safety

This species is ornamental only, not the St. John's Wort used in supplements (Hypericum perforatum), and should not be ingested. Like related Hypericum species, it can cause photosensitivity in grazing animals that eat large amounts.