mountain sawtooth

Achillea alpina var. discoidea

Achillea alpina var. discoidea is a perennial herbaceous plant belonging to the Asteraceae family, native primarily to alpine regions in Asia. The following outlines the growth characteristics, propagation methods, cultivation techniques, garden uses, and major pests and diseases, as well as control methods.

Growth Characteristics
- Morphology: Achillea grows to a height of approximately 30–60 cm, and its leaves are finely divided in a feather-like shape.
- Flowers: White or light pink flowers bloom from summer to early autumn.
- Environment: It prefers sunny locations and thrives in well-drained soil. It is highly cold-hardy and tolerates cold regions well.

Propagation Methods
- Seeds: Seeds can be sown directly in spring or autumn, or germinated indoors and then transplanted.
- Cuttings: Stems can be cut and propagated in early spring. Divide the cut stems into appropriate lengths and plant them in moist soil. - Division: It can be propagated by dividing clumps in spring or autumn.

Cultivation Method
- Soil: Choose well-draining soil; sandy soil is ideal.
- Watering: It is susceptible to overwatering, so be careful not to water too frequently. It is best to water when the surface soil dries out.
- Fertilizer: No special fertilizer is required, but a small amount of organic fertilizer can be applied during the growing season.

Uses in the Garden
- Landscape Enhancement: Its beautiful flowers brighten up the garden landscape. It is particularly well-suited for natural flowerbeds or wildflower gardens.
- Windbreak and Soil Stabilization: Since the roots of the mountain sawgrass are not shallow, it can serve as a windbreak or soil stabilizer in windy areas.

Important Pests and Diseases and Control Methods
- Diseases: It is generally resistant to disease, but it can contract root rot if water is excessive. To prevent this, proper drainage management is essential.
- Pests: Aphids or spider mites may occur. To control this, pesticides at appropriate concentrations can be used, or natural enemies can be utilized.

Sawtoothgrass is a relatively easy-to-manage plant that adapts well to various environments. It is a plant that contributes not only to decorative value in the garden but also to the maintenance of the ecosystem.

Plant Type
Plant Family	Asteraceae
Height	50~110cm
Spread
Colors	white, pink
Bloom Period	July to October
Water Needs	commonly
Exposure	Sunny
Freezing Resistance	-30°C

Terry's-eye
Achillea filipendulina

Topul 'Love Parade'
Achillea sibirica subsp. camschatica 'Love Parade'