North America Non-native Plant

Hypericum Coris

Botanical name: Hypericum coris

USDA symbol: HYCO15

Native status: Not native but doesn't reproduce and persist in the wild

Hypericum coris: A Mediterranean Charmer for Your Rock Garden If you’re looking to add a touch of Mediterranean magic to your garden, Hypericum coris might just be the plant you’ve been searching for. This delightful little shrub brings sunshine-yellow blooms and an almost pine-like texture that can transform even the ...

Hypericum coris: A Mediterranean Charmer for Your Rock Garden

If you’re looking to add a touch of Mediterranean magic to your garden, Hypericum coris might just be the plant you’ve been searching for. This delightful little shrub brings sunshine-yellow blooms and an almost pine-like texture that can transform even the most challenging garden spots into something special.

What Makes Hypericum coris Special?

Hypericum coris is a compact, evergreen shrub that’s part of the St. John’s wort family. Don’t let the lack of a widely-used common name fool you – this plant has plenty of personality! Its needle-like, blue-green leaves create an almost coniferous appearance, but come summer, it bursts into cheerful yellow flowers that seem to glow in the garden.

The plant typically grows 12-18 inches tall and wide, making it perfect for those spots where you need something substantial but not overwhelming. Its dense, mounding habit creates lovely texture contrast against broader-leafed plants.

Where Does It Come From?

This Mediterranean native calls the rocky hills and coastal areas of southeastern Europe and western Asia home. It’s perfectly adapted to the hot, dry summers and mild winters of the Mediterranean climate, which gives us some great clues about how to grow it successfully.

Why You Might Want to Grow It

Hypericum coris shines in several garden situations:

  • Rock gardens: Its natural habitat makes it a rock garden superstar
  • Xerophytic landscapes: Once established, it laughs at drought
  • Mediterranean-style gardens: Provides authentic Mediterranean charm
  • Pollinator support: Bees and other small pollinators love those bright yellow flowers
  • Low maintenance: Perfect for gardeners who want beauty without fuss

Growing Conditions and Care

The secret to success with Hypericum coris is thinking Mediterranean. Here’s what it needs to thrive:

Sunlight: Full sun is essential. This plant needs at least 6-8 hours of direct sunlight daily to flower well and maintain its compact shape.

Soil: Well-draining soil is absolutely critical. Sandy or rocky soil works beautifully. If you have heavy clay, consider creating a raised bed or adding plenty of gravel and sand to improve drainage.

Water: Once established, this drought-tolerant beauty needs minimal watering. In fact, overwatering is more likely to kill it than drought!

Climate: Hardy in USDA zones 7-10, it handles heat beautifully but may struggle in areas with harsh, wet winters.

Planting and Care Tips

When to plant: Spring or fall are ideal times, giving the plant time to establish before extreme weather.

Spacing: Plant about 18-24 inches apart to allow for mature spread.

Maintenance: Light pruning after flowering helps maintain shape. Remove any dead or damaged growth in late winter.

Fertilizing: These plants prefer lean soil, so avoid heavy fertilization which can lead to excessive foliage at the expense of flowers.

A Note on Native Alternatives

While Hypericum coris isn’t native to North America, it’s not considered invasive either. However, if you’re committed to native gardening, consider these alternatives that offer similar benefits:

  • Native Hypericum species like shrubby St. John’s wort (H. prolificum)
  • Wild bergamot for yellow summer blooms
  • Native sedums for rock garden situations

The Bottom Line

Hypericum coris is a charming choice for gardeners dealing with hot, dry conditions who want something a little different from the usual suspects. Its needle-like foliage provides year-round interest, while the summer flowers add that perfect pop of sunshine yellow. Just remember: good drainage is your friend, and less water is definitely more with this Mediterranean beauty!

Whether you’re creating a rock garden masterpiece or just need a reliable, low-water plant for a challenging spot, this little shrub might just become your new garden favorite.

Hypericum Coris

Classification

Group

Dicot

Kingdom

Plantae - Plants

Subkingdom

Tracheobionta - Vascular plants

Superdivision

Spermatophyta - Seed plants

Division

Magnoliophyta - Flowering plants

Subdivision
Class

Magnoliopsida - Dicotyledons

Subclass

Dilleniidae

Order

Theales

Family

Clusiaceae Lindl. - Mangosteen family

Genus

Hypericum L. - St. Johnswort

Species

Hypericum coris L.

Plant data source: USDA, NRCS 2025. The PLANTS Database. https://plants.usda.gov,. 2/25/2025. National Plant Data Team, Greensboro, NC USA