Goldencup St. Johnswort

Hypericum patulum

Hypericaceae or Clusiaceae (St. Johnswort Family)

▲ shrub on east side of Karls Hall, MSU campus

▲▼ flowers

 

▲ leaves - opposite arrangement

Location on campus:  south of west door to Ellis Hall

Location near campus:  toward southeast corner of Xeriscape Garden; Xeriscape Garden is at northwest corner of National and Linwood, about 3/4 mile south of campus on National Avenue.

Hypericum patulum: Goldencup St. Johnswort

·         leaves deciduous to semi-evergreen, opposite, simple, ovate with entire margins; leaves dark green above and glaucous below; 1-2.5" long and 1/3 to ½  as wide

·         stems brown, often dying back to ground in winter

·         flowers yellow in terminal cymes or solitary, in late spring; bright yellow with many petals and stamens

·         rounded growth habit, about 5' x 5'

·         likes full sun to part shade and dry, rocky soils; tolerates high pH soils

fast growth rate, but may need to prune back to ground in spring, periodically