A new cultivar of Thuja plant named ‘Leprechaun’ that is characterized by its slow growing and compact plant habit, its foliage that is soft in texture and dark green in color, its very good cold hardiness without winter foliage bronzing (withstood −20° F.), and its small mature plant size; reaching an average of 2.74 m in height and 1.52 m in width.

A new and distinct Thuja cultivar named ‘TPMTF’ is disclosed, characterized by dark green foliage on dense plants with upswept branches. Plants have been observed to tolerate high temperatures in the Southern United States. The new cultivar is a Thuja, suitable for ornamental garden purposes.

A new and distinct cultivar of Thuja plant named ‘RutThu5’, characterized by its nice, columnar form, dark green foliage that does not have chartreuse tips like Thuja occidentalis ‘Emerald Green’. ‘RutThu5’ can be grown with one cutting per pot compared to the industry standard of three cuttings per pot, and has similar growth rate in containers and field as three-cutting plants of ‘Emerald Green’. The new ‘RutThu5’ has demonstrated cold hardiness to about −34° F. in trials conducted in Minnesota.

A new and distinct cultivar of Thuja plant named ‘RutThu5’, characterized by its nice, columnar form, dark green foliage that does not have chartreuse tips like Thuja occidentalis ‘Emerald Green’. ‘RutThu5’ can be grown with one cutting per pot compared to the industry standard of three cuttings per pot, and has similar growth rate in containers and field as three-cutting plants of ‘Emerald Green’. The new ‘RutThu5’ has demonstrated cold hardiness to about −34° F. in trials conducted in Minnesota.

A new and distinct cultivar of Thuja plant named ‘RutThu2’, characterized by its compact, mounding, spreading form with unusual, thread-leaf shoots; growth in USDA Zone 8a, growth in full sun and part-shade conditions in landscape and container production, and better heat tolerance than other thread-leaf forms of Thuja occidentalis or Thuja plicata ‘Whipcord’.

A new and distinct cultivar of Thuja plant named ‘RutThu2’, characterized by its compact, mounding, spreading form with unusual, thread-leaf shoots; growth in USDA Zone 8a, growth in full sun and part-shade conditions in landscape and container production, and better heat tolerance than other thread-leaf forms of Thuja occidentalis or Thuja plicata ‘Whipcord’.

A new and distinct cultivar of Thuja plant named ‘RutThu3’, characterized by its compact, rounding form and yellow foliage with orange tips; growth and heat tolerance in USDA Zone 8a, growth in full sun and afternoon shade conditions in landscape and full sun in container production, disease and insect resistance, and cold hardiness to about −34° F. in MN.

A new and distinct cultivar of Thuja plant named ‘RutThu3’, characterized by its compact, rounding form and yellow foliage with orange tips; growth and heat tolerance in USDA Zone 8a, growth in full sun and afternoon shade conditions in landscape and full sun in container production, disease and insect resistance, and cold hardiness to about −34° F. in MN.

A new and distinct cultivar of Thuja plant named ‘RutThu4’, characterized by its compact, globose growth, similar in shape but larger in size and with a faster growth rate than Thuja occidentalis ‘Little Giant’. ‘RutThu4’ also has disease resistance when grown in USDA Zone 8a, and has demonstrated both heat tolerance as well as cold hardiness to about −34 ° F. in trials conducted in Minnesota.

A new and distinct cultivar of Thuja plant named ‘RutThu4’, characterized by its compact, globose growth, similar in shape but larger in size and with a faster growth rate than Thuja occidentalis ‘Little Giant’. ‘RutThu4’ also has disease resistance when grown in USDA Zone 8a, and has demonstrated both heat tolerance as well as cold hardiness to about −34 ° F. in trials conducted in Minnesota.