Chamaecyparis pisifera 'Lemon Thread' (Lemon Thread Sawara Falsecypress, Lemon Thread Japanese Falsecypress.)


Michael's Opinion

Lemon thread false cypress is a beautiful specimen with golden mature foliage; it also is a low mounding plant perfect for rock gardens. I also really like this plant due to its exfoliating red bark.

Botanical Information

FamilyCupressaceae
GenusChamaecyparis
Speciespisifera
Cultivar'Lemon Thread'
SynonymsChamaecyparis squarrosa 'Lemon Thread’.
CategoryWoody
TypeShrub (evergreen)
Origin A sport of ‘Squarrosa Lutea’, introduced in 1965.
Pronunciation

Details

USDA Hardiness Zone4-8
USDA Hardiness Ref.
Canadian Hardiness Zone3-8
Canada Hardiness Ref.
RHS Hardiness ZoneH7
RHS Hardiness Ref.
Temperature (°C)-35
Temperature (°F)-30
Height3-4 m
Spread0.5-1.5 m
GrowthSlow
Flowering PeriodJune

Description and Growing Information

General DescriptionLemon thread Japanese false cypress has thin awl shaped foliage. It’s a slow growing mounding plant that after 20 years of growth will only be around 3 m. On mature specimens there will be a reddish-orange exfoliating bark.
ID CharacteristicDistinct yellow colour, foliage is thread like awls very loose mounded distinct cones vary in size from 2.24-4.48 cm with 5-6 scales on each cone. On older specimens there will be reddish-orange exfoliating bark. Also has weeping branches that would almost seem stringy or cord like and also has strip like bark.
ShapeSemi-dwarf conifer, mounded, eventually pyramidal over time.
LandscapeThe lemon thread Japanese false cypress can be used in rock gardens; small areas also can be used as an accent plant.
PropagationCuttings should be taken in October, November or December and should be treated with 1000 ppm IBA and placed in sand. Another way is grafting the cutting to an under stock.
CultivationNeeds moist loamy, but well drained soil. Does best in full sun.
PestsNo known serious insect or disease problems. Plants in the genus Chamaecyparis generally have some susceptibility to juniper blight, root rot and certain insect pests such as bagworms.
Notable SpecimensThe Gardens of Fanshawe College, dwarf conifer garden, London, Ontario, Canada.
HabitatHorticultural origin.
Bark/Stem DescriptionSmooth, reddish-orange plated bark that peels off in strips on older specimens the bark will exfoliate being a reddish-orange colour as well.
Leaf DescriptionVery fine tassel like branchlets presenting an appearance of lace. The leaves are patterned awl-like and do not grow densely together. 4-8 cm long leaf growth.
Flower DescriptionMonoecious flowering shrub with no flower interest.
Fruit DescriptionSmall pea-like cones 2.2 - 4.5 cm in size found clustered on short stalks mostly at branch tip. Light brown in colour cone scales tend to be wrinkled and soft.
Colour DescriptionStrong yellow colour when in full to partial sun. In shaded areas may lose some colour almost gaining a greenish colour. On the underside of the branch there is a white like line.
Texture DescriptionVery fine texture. When touching the foliage against the growth the leaves are sharp and awl-like, otherwise it is soft to the touch.

Photographs