Potentilla argentea aka Silver Cinquefoil

Potentilla argentea is a small perennial in the rose family. Its common names include silver cinquefoil and hoary cinquefoil. Its native range spans Europe, the Russian Far East and western Himalaya. It is native to Britain and Ireland, too. This plant loses its leaves in winter. It suits meadows, borders and gardens with a wild feel.

Fine, branched stems can stand upright or sprawl across the ground. They reach about 1 foot [0.3 metres] in height. Garden plants can reach 1.6 feet [0.5 metres] tall and wide. Plants form a low mound and reach full size within one to two years. Each palmate leaf has five narrow leaflets. White, felt-like hairs cover the leaf undersides. Leaves near the base are the largest. The leaflets grow smaller and narrower farther up each stem. Leaves close to the flowers have short stalks or none.

Small yellow flowers grow in loose groups above the leaves. Each flower has five petals in a pale yellow shade. The RHS places flowering in late spring and summer. Chicago Botanic Garden records blooms from May through October. The flowers and leaf colour both add garden interest. The plant fits the front of a border or a rock garden. It also suits cottage gardens, wildlife gardens and naturalized areas. Deer tend to leave it alone.

Grow this cinquefoil in full sun and soil that drains well. Chicago Botanic Garden also lists partial shade as suitable. The RHS lists chalk, loam and sand as suitable soils. It accepts acid, neutral and alkaline soil. Moist soil suits it, provided water can drain away. It also tolerates drought once grown. Sites may be open or sheltered, facing south or west. The RHS rates its hardiness H7. Chicago Botanic Garden lists USDA zones 3–7.

Care needs are low, and the plant needs no pruning. Seed offers a way to raise new plants. Serious pest and disease problems are not usual. Spider mites, fungal leaf spots and mildew can still occur. Humid climates may bring mildew problems. The RHS also notes a risk of honey fungus. Its safety notice says people and pets must not eat the fruit. It advises gloves and other protective gear when handling the plant.