Primula japonica is also known as Japanese Primrose, Japanese Cowslip, Postford White, Queen of Primroses, or Valley Red. It is a deciduous, herbaceous perennial. It grows to 1.5ft or 45cm. It is part of the Primulaceae family of plants. It is native to Japan.
Primula japonica has a basal rosette of bright green leaves that almost look like a lettuce leaf. The flowers grow on a long stalk. It has an erect stem with a crown of flowers. The color of the flowers ranges from white, to pink and red. Primula japonica flowering season is from late spring to early summer, May to July. Deadhead the flowers to encourage more flowers.
Grow Primula japonica in a shady and moist, almost poorly drained soil. It is an ideal plant along streams and ponds. Primula japonica is a fast grower. It loves consistently moist but humus-rich soil. Plant it in the sun only in cooler locations.
You can cut Primula japonica back after flowering. It attracts butterflies and bees and it is deer-resistant. Propagate Primula japonica by seed in late winter or by division in autumn. Take root cuttings when it is dormant.