Polygonatum humile aka Dwarf Solomon's Seal

Polygonatum humile is known as dwarf Solomon's seal. This small perennial belongs to the asparagus family, Asparagaceae. Its native range runs from eastern Kazakhstan to Japan. It grows in temperate parts of Asia, including China and Korea. Wild plants grow in meadows, thin woods, forests, and grassy slopes. The plant loses its leaves each year.

In gardens, plants stand about 0.5–0.75 feet [0.15–0.23 metres] tall. They spread about 1–1.5 feet [0.30–0.46 metres] wide. RHS gives a broader upper limit of 1.6 feet [0.5 metres] for both. Slim rhizomes grow just beneath the soil and form small colonies. Growth is slow, though the plant can serve as ground cover. Straight, green stems rise above these creeping rhizomes. The simple green leaves have pointed tips and smooth edges. Their shapes range from oval to narrow and lance-shaped. Parallel veins run along the leaves, which lack hairs.

Small flowers hang beneath the leaves, where leaf and stem meet. Each leaf axil holds one flower, or sometimes two. The flowers are tubular or bell-shaped, with white to greenish-white petals. They reach about 0.07 feet [0.02 metres] long. May to June is the main bloom period reported. Chicago Botanic Garden also records flowering in March and April. Small blue-black berries follow the flowers and hang from the axils. Both flowers and fruit add interest near the ground.

Give this plant fertile soil rich in organic matter. Keep the soil moist, but allow excess water to drain. It suits partial shade or full shade. RHS also lists full sun as a suitable exposure. It accepts clay, loam, sand, and chalk soils across different pH levels. Missouri Botanical Garden lists USDA zones 4–8; Chicago extends this to zone 9. RHS rates it H7 for UK hardiness. Use it in woodland beds, shady rock gardens, or border fronts. It also suits containers and small cottage gardens. Divide plants in spring, and cut old stems down in late autumn.

Care needs are low, and sources report few serious problems. Slugs and Solomon's seal sawfly may still damage plants. Sources report resistance to deer and rabbits. The berries are poisonous and may cause vomiting or diarrhea. RHS also warns that eating the plant can harm dogs. Reported food uses concern boiled young shoots and cooked roots. These uses do not make raw plants or berries safe. Plants For A Future records traditional medicinal uses for the roots.