COMMON NAME: St. John’s wort, Aaron’s beard, sweet-amber, tutsan
BOTANICAL NAME: Hypericum species, hybrids, and cultivars
FAMILY: Hypericaceae (sometimes considered a subfamily of Clusiaceae)
HARDINESS: Zones 3–9
CONDITIONS: St. John’s worts thrive in a wide range of soil conditions from dry rocky places to damper woodlands, as well as average, well-drained garden soils. They do well in full sun, but many thrive in light or part shade too; they do not like deep shade. Several species tolerate drought and can be used to control soil erosion.
BLOOM TIME: Early to late summer
HEIGHT: 12–60 inches
BEST FEATURE: Most species are grown for their showy, attractive, usually bright yellow flowers, often centered with a prominent boss of yellow stamens. A few species display colorful fruits that linger well into fall and are popular for floral arrangements. Deer resistant.
For more information, see Resources on page 108.