st. andrew's-cross
Hypericum olympicum
RHS AGM 1993
USDA zones5 to 8
SunHandles full sun to partial sun
WaterHandles moderate to moist soil
Size4 to 9 inches tall4 to 20 inches wide
- Growth rate
- Slow
- Habit
- Dense
- Bloom season
- Summer
- Bloom color
- Yellow
- Foliage color
- Gray/silver, green
- Soil types
- Sand, loam, clay
Garden uses
Notes
St. andrew's-cross (Hypericum olympicum) is a low plant for borders and rock gardens. It is hardy to USDA zone 5, or down to -20°F (-29°C). This plant likes full or part sun and average to moist, sandy, loamy, or clay soil. It stays dense and compact, and the evergreen leaves are gray-silver and green. Yellow flowers open from early to late summer. Growth is slow, so give it a spot where it can fill in over time.
Pairs well with Blue fescue, Heather, and Greig's tulip.
Native range
Türkiye.