Thuja occidentalis Primo

Available early May

Thuja occidentalis 'Primo' photo courtesy of Iseli Nursery

White Cedar

Thuja occidentalis Primo™ is a irregular-growing dwarf selection of Eastern arborvitae with firm, spire-like growth which will quickly capture and hold the eye. It grows with refined, scale-like foliage that twists and turns providing much textural interest and beauty that more closely resembles that of a Hinoki cypress (Chamaecyparis obtusa) rather than that of an arborvitae. In summer, it is a refreshing, vivid green, which eventually becomes muted bronze for the winter in colder regions.  It is on the demure side, with only 2 to 4 inches (5 – 10 cm) of growth a year, so its proportions lend itself to troughs and small spaces. It responds well to judicious pruning although that is not necessary as sculptural charm and character will develop naturally without manipulation. In 10 years, with good growing conditions, expect 3 feet (1 m) in height and 1.5 feet (45 cm) in

  • Height: 1.2 m (4 ft)
  • Spread: 30 cm (12 in)
  • Cold Hardiness: Zone 4
  • Sun or Shade: sun
  • Foliage Colour: green
  • Shape: narrow upright

Growing and Maintenance Tips

Cedars are easy to grow and adaptable to a wide range of soil conditions.  Amend the soil by adding compost and ensure that they receive regular watering because cedars need an evenly moist soil. Mulching the root zone will also help to keep the soil moist.  They will tolerate partial sun but too much shade will make them lanky and open.  Pruning is not normally required but any shaping should be done in early spring.