Taiwanese horned nancheon

Mahonia japonica

Mahonia japonica has the following characteristics regarding growth, propagation, cultivation, garden uses, major pests and diseases, and control methods.

Growth Characteristics
- Growth Environment: It thrives in partial shade and prefers soil with moderate moisture. Avoid environments that are too dry or too wet.
- Cold Hardiness: It is quite cold-hardy, allowing it to withstand winter conditions, making it possible to overwinter in most regions of Korea.
- Leaves and Flowers: It is an evergreen shrub with glossy, thorny leaves. Yellow flowers bloom between December and March and have a pleasant fragrance.

Propagation Methods
- Seed Propagation: Harvest seeds after the fruit matures and sow them immediately, or store them in the refrigerator and sow them in early spring.
- Cuttings: Propagate by cutting healthy branches in spring or summer. Roots will develop well if planted in well-drained soil and kept moist. Cultivation Method
- Soil: Well-drained neutral or slightly acidic soil is ideal.
- Watering: Do not water too frequently; it is best to water deeply when the surface is dry.
- Fertilizer: Applying slow-release fertilizer when growth begins in the spring is beneficial.
- Pruning: Prune lightly only when necessary, usually after the flowers have faded.

Garden Uses
- Nandina japonica grows well even in shady areas, allowing for various garden arrangements. Additionally, it is highly popular as an ornamental plant due to its moderate size, beautiful leaves, and fragrant flowers.

Major Pests and Control Methods
- Pests and Diseases: While relatively resistant to pests and diseases, it may be susceptible to attacks from aphids or scale insects.
- Control Methods: Detect pests and diseases early through regular observation. If pests are visible, control them using eco-friendly insecticides or soap solutions. Use pesticides in severe cases. Taking these characteristics into account and properly caring for Nandina domestica will be of great help in cultivating a beautiful garden.

Plant Family	Berberidaceae
Height	1~3m
Colors	yellow
Bloom Period	March to April
Water Needs	commonly
Exposure	semi-shaded area
Freezing Resistance	-15°C

Horned Nandina Premontii
Mahonia fremontii

Taiwanese Horned Nandina 'Ibechner'
Mahonia japonica 'Hivernant'