‘Tansu’ is a super-dwarf cultivar of Cryptomeria japonica prized for its extremely compact growth habit and fine, needle-like foliage. Compared to standard cryptomeria, it grows more slowly and with much tighter structure, making it particularly well suited to small bonsai and long-term refinement. The foliage holds density well with regular pruning, and the cultivar responds reliably to wiring and directional growth control. Over time, it can develop attractive bark character while maintaining a consistently miniature scale. Hardy in the ground to Zone 6.
 
Care Notes
Light: Full sun to part sun
Water: Moderate; prefers evenly moist soil, do not allow to fully dry
Fertilizer: Moderate
Bonsai Development: Responds well to pruning and wiring; flexible young growth allows for precise branch placement and compact pad development
In-ground hardiness: Zone 6
Winter Care: Cold-hardy and requires winter dormancy; keep outdoors year-round. In colder climates, place on the ground, mulch around the pot, and protect from wind