Berberis × gladwynensis 'William Penn'
Common name: 
William Penn Barberry
Pronunciation: 
BER-ber-is glad-win-EN-sis
Family: 
Bereridaceae
Genus: 
Berberis
Type: 
Broadleaf
Native to (or naturalized in) Oregon: 
No
  • Evergreen shrub, 4 ft (1.2 m) tall and 4-6 ft (1.2-1.8 m) wide, mounding and spreading.  Stems have long spines (thorns).  Leaves alternate, simple, 2.5-5 cm long, margin is spiny, glossy dark green, bronze-red in winter.  Flowers small, yellow, appear in spring.  Fruit small, tube-like, red.
  • Sun or partial shade
  • Hardy to USDA Zone 6      A hybrid of B. verruculosa and B. gagnepainii, introduced by the Henry Foundation of Gladwyne, Pennsylvania.
Click image to enlarge
  • plant habit, flowering

    plant habit, flowering

  • plant habit, fruiting

    plant habit, fruiting

  • developing fruit

    developing fruit

  • leaves and thorns

    leaves and thorns