Cecil Yeonyeongcho Cecil

Trillium sessile

Growth Characteristics of Trillium sessile

Trillium sessile is a perennial herbaceous plant native to North America that primarily grows in moist, shady forests. It typically grows to a height of 20–30 cm, and is characterized by leaves arranged in groups of three. Flowers usually bloom in the spring and come in shades of red, purple, or brown.

Propagation Methods

Trillium sessile is mainly propagated by seeds or root division. Propagation by seeds takes a long time, and it usually takes 4–5 years for the plant to mature and flower. Root division is best performed in the autumn, and the root clumps should be carefully divided and planted.

Cultivation Methods
- Soil: Well-drained soil that retains moisture is suitable. It is recommended to use soil rich in humus.
- Location: A partially shaded area is ideal. Be careful, as direct sunlight can burn the leaves.
- Watering: Water regularly to keep the soil moist at all times. Watering should be provided sufficiently, especially during the growing season.
- Fertilizer: It is recommended to use slow-release fertilizer in the spring.

Uses in the Garden
Cécile primrose is excellent for planting in shady gardens or under trees to add a focal point with its vibrant flowers. It can harmonize well with other shade-loving plants.

Important Pests and Control Methods
- Diseases: While Cécile primrose is relatively resistant to disease, fungal issues (e.g., root rot) may occur in humid environments. To prevent this, it is important to use well-draining soil and maintain appropriate planting spacing to ensure good ventilation.
- Pests: Snails or slugs may often gnaw on the leaves. To prevent this, physical methods (e.g., snail scrapers) or organic pesticides can be used.

Although Cécile primrose is a relatively easy plant to care for, creating an environment as close to nature as possible is the key to growing it healthily.

Plant Type
Plant Family	Yeoro and
Height	15~30cm
Spread	15~30cm
Colors	red
Bloom Period	April~May
Water Needs	commonly
Exposure	semi-shaded area
Freezing Resistance	-30°C

Yeonyeong Elementary School Undulatum
Trillium undulatum

Yellow Yeonyeong Elementary School
Trillium luteum