Primula sikkimensis

This is a clump-forming, herbaceous perennial that grows from a basal rosette of leaves. It typically reaches a height of 40 - 90 cm (16-35 inches), with the slender flower stems extending significantly above the foliage. Its spread is usually around 20 - 60 cm (8-24 inches).

Deciduous. The leaves are oblong, elliptic, or lance-shaped, often toothed or crinkled, and a fresh to bright green. They form attractive rosettes at the base of the plant.

Produces loose umbels (clusters) of fragrant, funnel-shaped, nodding flowers. The flowers are typically a vibrant sulphur yellow or cream, though some variations exist. They are often covered with a fine, mealy-white layer (farina), particularly on the stems and flower backs. The blooming season is from late spring to early summer (May to July), providing a beautiful display.

Thrives in partial shade to full shade. While it can tolerate some sun if the soil remains consistently moist, it prefers cool, shaded conditions, mimicking its natural high-altitude, moist woodland and streamside habitats.

Excellent frost hardiness (USDA Zones 4-8). It is very cold tolerant and reliably overwinters outdoors in temperate regions.

Prefers deep, humus-rich, consistently moist to wet, neutral to acidic soil. It naturally grows in boggy meadows, stream sides, and wet glades. Good drainage is still important, but the soil must never dry out. It's an ideal plant for bog gardens or areas with naturally high soil moisture.

Excellent for bog gardens, rain gardens, woodland gardens, pond or stream margins, and shaded borders where consistent moisture can be maintained. Its upright habit and bright flowers make it a striking accent or a mass planting in appropriate settings. It attracts pollinators.

High water requirement. This plant absolutely needs consistently moist to wet soil conditions. It is not drought-tolerant and will suffer if the soil dries out, especially during its active growing season.

Relatively low maintenance if its moisture needs are met. Provide a generous layer of leaf mold or compost annually to maintain soil moisture and fertility. Remove spent flower stems after blooming to encourage tidiness. Division in autumn or early spring can help maintain vigor and is a common propagation method. Generally resistant to deer, but slugs and snails can sometimes be an issue.

Containerized plants can be planted from spring to early autumn. Division is best done in autumn or early spring.