Callirhoe alcaeoides aka Light Poppymallow

Callirhoe alcaeoides belongs to the mallow family, Malvaceae. It is a perennial, which means it lives for years. Common names include prairie poppy mallow and poppy mallow. It grows wild in the United States. Its range includes the central and southern Great Plains. Kew gives its range as Idaho to the east-central United States. Missouri Botanical Garden gives a range from Illinois and Nebraska south. That range extends to Texas and Alabama. Wild plants grow on plains and barrens in dry ground. The soil may be rocky or sandy. In Missouri, they grow in prairies and by roads. They also grow in grassy gaps and on disturbed ground.

This plant has thin stems that stand up or sprawl. Garden plants reach about 1–1.7 feet (0.30–0.51 metres) tall. The listed garden spread is about 1.5 feet (0.46 metres). Its low form suits the front of a border. Stems that sprawl can also trail over a stone wall. A long taproot helps the plant cope with drought. This root makes plants hard to move once they take hold. Keep this in mind when you choose a planting spot.

The flowers face up and form open cups. Each has five petals. A flower can span about 0.2 feet (0.06 metres). Colours range from white through pink to pale lilac. Flowers grow from the leaf axils, where leaves join stems. They lack bracts, or small leaf-like parts, beneath them. Most blooms grow one at a time. Missouri Botanical Garden lists the bloom season as June through August. Its fuller account gives May through August, a longer season. The pale blooms make a clear show above the thin stems.

Grow this species in full sun, in soil that drains well. It grows in dry to somewhat moist soil. It needs little care. Avoid wet ground and sites that drain too slowly. It copes with drought, so it suits dry, sunny beds. Missouri Botanical Garden lists USDA hardiness zones 4–9 for it. Plants grow with ease from seed. They may also self-seed when garden conditions suit them.

Use prairie poppy mallow in rock gardens or native plant beds. It also suits meadows, prairie plantings and less managed areas. Its short height makes it useful along bed edges. It fits both formal and less structured gardens. Reports list no major insect or disease problems. Crown rot can set in where soil fails to drain well.