Chamaecyparis lawsoniana 'Knowefieldensis' / Knowefield Lawson cypress

Chamaecyparis lawsoniana 'Knowefieldensis' is a very broad, flat-topped spreading selection of Lawson cypress with floppy sprays of rich, blue-green foliage. After 10 years of growth, a mature specimen will measure 2.5 feet (80 cm) tall and 3 feet (1 m) wide, suggesting an annual growth rate of 3 to 4 inches (7.5 - 10 cm).

This cultivar originated as a seedling selected around 1910 by Little and Ballantyne Nursery, Carlisle, United Kingdom.

Chamaecyparis lawsoniana 'Knowefieldensis' — a mature specimen.
Photo by Bill Barger

Chamaecyparis lawsoniana 'Knowefieldensis' — a closeup of foliage detail.
Photo by Bill Barger

Chamaecyparis lawsoniana 'Knowefieldensis' / Knowefield Lawson cypress

RECOMMENDED HARDINESS ZONES:
5 (-10 to -20 F / -23.3 to -28.9 C)
9 (20 to 30 F / -1.1 to -6.7 C)

HORTICULTURAL STATUS: Established
ORIGIN: Seedling Selection
COLOR: Blue Green
TRINOMIAL TYPE: Cultivar
GROWTH SHAPE: Mounding, Arching or Weeping
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

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Chamaecyparis lawsoniana 'Knowefieldensis' / Knowefield Lawson cypress

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