Conifer Database - Riverside No. 1

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.

    
Picea abies ‘Riverside No. 1’

Picea abies

Picea abies 'Riverside No. 1' is a dwarf, globose selection of Norway spruce with dense branches, thick, stiff, radially arranged needles and prominent orange-brown buds. After 10 years of growth, a mature specimen will measure 24 inches (60 cm) tall and wide an annual growth rate of 2.5 inches (6 cm).

This cultivar originated as a witch's broom found in Riverside cemetery, Moline, Illinois, by Justin "Chub" Harper. In his field notes he described it as, "medium size, high, tight, and nice." Although many of Harper's selections never gained great traction in the U.S. nursery trade, one can find many of the original propagations in the conifer collections at Hidden Lake Gardens, Tipton, Michigan and Bickelhaupt Arboretum, Clinton, Iowa as well as in private collections in the ACS Central Region.




Picea abies

Picea abies

Picea abies

RECOMMENDED HARDINESS ZONES


HORTICULTURAL STATUS:Established / Published
COLOR:Blue Gree
GROWTH SHAPE:Globe or Globose
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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