Tenzan Japanese Cedar

Cryptomeria japonica ‘Tenzan'

Tenzan’ is a remarkably compact Cryptomeria cultivar, noted for its extremely dense habit and seasonally changing color—dark green in summer transitioning to a rich, red-bronze hue in winter. Likely the smallest Cryptomeria variety available, it’s ideal for miniature container gardens, troughs, or rock gardens where space is limited.

Slightly less hardy than other dwarf selections, ‘Tenzan’ requires careful siting to avoid frost damage and ensure successful growth. Despite its smaller stature, this dwarf Japanese Cedar brings year-round interest and a refined texture to any well-planned garden setting.

• Garden Size:  1’H x 1’W
  
• Dwarf:  1-2″/year
• Habit:  Globe
• Hardiness:  Zone 7
• Exposure:  Sun to Partial Shade
  

Many perennials and bonsai plants take on a 'winter look' that's different from their summer appearance. The colder temperatures and shorter days trigger seasonal changes, which are actually part of their natural cycle. Some plants need this winter break to bloom and perform their best when the growing season returns. While they might look semi-dormant until early spring, these cosmetic changes don’t impact their health at all.

Bonsai Basic Care: Hard

Watering: Bonsais require careful watering. The frequency depends on the species and the climate, but generally, the soil should be kept slightly moist. Check the soil daily, and water thoroughly when the top layer feels dry.

Light: Most bonsai trees prefer bright, indirect light. A few hours of direct sunlight early in the morning or late in the afternoon is beneficial, but a direct midday sun can be harmful, especially in hotter climates.

Soil/Drainage: To prevent water retention and root rot, use a well-draining bonsai-specific soil mix.

Temperature/Humidity: Depending on the species, bonsai trees can be kept indoors or outdoors. Indoor bonsais generally prefer temperatures between 60-75°F and benefit from increased humidity, which can be achieved through daily misting or humidity trays.

Feeding: Fertilize your bonsai regularly during the growing season. Use a balanced, water-soluble fertilizer every few weeks or as recommended for the specific type of tree.

Pruning/Training: Pruning is essential to maintaining the shape and health of a bonsai. Regular pruning of the roots and canopy is necessary. Training with wires can also shape branches and direct growth.

Repotting: Most bonsai trees require repotting every 2-5 years to prevent root crowding and replenish nutrients in the soil. This is best done in the spring.

General Tips: Regularly inspect for pests and diseases. Bonsai trees are susceptible to insect infestations and fungal infections, which should be treated promptly to keep the tree healthy.

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