Sanjangdae

Arabidopsis halleri subsp. gemmifera

Growth Characteristics

This is a perennial herbaceous plant belonging to the Brassica family, primarily distributed in Asia. It is a subject of research due to its excellent tolerance to salt and heavy metals. The leaves grow in a rosette form, clinging to the ground, and the flowers come in a variety of colors ranging from white to purple.

Propagation Methods

It is mainly propagated by seeds. It germinates well in the spring and is characterized by relatively rapid growth. While it grows well in its natural state in suitable environments, germination can also be induced indoors if necessary.

Cultivation Methods
 - Soil: It prefers well-draining soil. It is recommended to mix sand into standard garden soil to improve drainage.
 - Sunlight: It is ideal to plant in a location where it can receive ample sunlight.
 - Watering: Water when the soil dries out, but avoid excessive watering.
 - Temperature: The optimal temperature is 15–25°C; it is best to avoid extreme high or low temperatures. Use in the Garden
It possesses high decorative value in itself. Its rosette-shaped leaves and small flowers add a natural atmosphere to the garden, and because it thrives even in soils rich in heavy metals, it can also be utilized as a restoration plant.

Important Pests and Diseases & Control Methods
- Diseases: While generally resistant to pests, leaf blight and powdery mildew may occur. To prevent this, it is recommended to plant in a well-ventilated location and avoid excessive moisture.
- Pests: Aphids and butterfly larvae may appear, so observe the plant regularly and use insecticides for control if necessary.

If you wish to grow it organically, you can prevent pests by planting herbs or repellent plants around the plant.

By managing the Sanjangdae in this manner, it can grow healthily.

Plant Type
Plant Family	Cruciferae
Height	15~30cm
Spread
Colors	white, purple
Bloom Period	May~June
Water Needs	commonly
Exposure	semi-shaded area
Freezing Resistance	-15°C

long-stemmed greens
Turritis glabra

Island long pole Takeshima
Arabis takesimana