Conifer Database - Wiethorst

Conifer Trees Database

Welcome to the American Conifer Society Database

Established in 1983, our mission is centered on advocating for the integration of conifer trees in garden designs and landscapes. We are dedicated to educating enthusiasts and the general public about the proper care, cultivation, and conservation of these majestic and diverse evergreens.

    
Pinus × schwerinii ‘Wiethorst’

Pinus x schwerinii 'Wiethorst' is a dwarf selection of Schwerin's pine, an interspecific hybrid of Eastern White pine (P. strobus) and Himalayan pine (P. wallichiana). It is a small, upright-growing tree with fluffy light-green needles displaying silvery undersides. A valuable trait of this tree is that it will produce abundant seed cones at a young age. Expected annual growth is 6 to 8 inches (15 - 20 cm), producing a 6 foot (2 m) tall tree after 10 years in the landscape.

This cultivar originated as a witch's broom found by Johann Wieting of Giesselhorst Germany. The cultivar name is actually a combination of the names Wieting and Giesselhorst. This cultivar is very desirable to the conifer collector because it is one of the few existing cultivars of Pinus × schwerinii. It was also one of two plants selected in 2014 for inclusion into the ACS Collectors' Conifer of the Year Program.




Pinus × schwerinii

Pinus × schwerinii

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HORTICULTURAL STATUS:Established / Published
COLOR:
GROWTH SHAPE:Narrow Pyramid or Columnar
GROWTH SIZE:Dwarf: 1 to 6 inches (2.5 – 15 cm) per year / 1 to 5 feet (0.3 – 1.5 m) after 10 years
ORIGIN:Witch's Broom


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