polyanthus

Polyanthus refers to a group of cultivars within the genus Primula, commonly marketed as polyanthus primroses. The term is often applied to Primula × polyantha hybrids, bred for multiple flowers per flowering stalk and dense terminal clusters. They form a key segment of spring bedding and floriculture.

Plants form a low clump of rounded, crinkled leaves. Flowering stems rise to about 15–25 cm and carry dense clusters of cup-shaped blossoms in a wide range of colors, often with contrasting centers. Flowers appear from late winter to spring, though some cultivars bloom earlier or later in the season.

Polyanthus prefer cool climates and bright light. They grow in rich, well-drained soil and require regular moisture without waterlogging. In temperate regions they are hardy to about USDA zone 5–6, and in hotter areas they are grown as short-lived annuals or container plants. They benefit from cool nights as temperatures rise in spring.

After flowering, remove spent blooms and allow foliage to photosynthesize to store energy for next season. They can be divided every few years. Propagation is usually by division or seed; division in autumn or early spring is common.

The name polyanthus derives from Greek poly “many” and anthos “flower.” Polyanthus Primula are widely used in borders, containers, rock gardens, and indoor displays.