Agrimonia rostellata

Common Names

Woodland Agrimony, Beaked Agrimony

Summary

Woodland Agrimony (Agrimonia rostellata) is a perennial herb in the Rosaceae family with a fibrous root system and slender, erect stems reaching about 50–100 cm tall. Leaves are alternate and compound with 3–9 oblong-oval leaflets; inflorescences are terminal racemes of yellow flowers with five petals, and the fruits are obconic hypanthia with hooked bristles, producing a beaked appearance when ripe. It favors base-rich soils in upland forests and woodlands, from dry-mesic to moist habitats, with well-drained soil and partial sun to full sun. It blooms July to September; flowers attract Halictid bees, other small bees, Syrphid flies, and other flies, and fruits disperse via hooked bristles that cling to fur or clothing. A native North American species, it occurs across central and eastern states and adds ecological value in woodland-edge or naturalistic plantings where suitable soil conditions exist.

Lifecycle

Perennial

Height

1.5-3.5 feet

Spread

1.5-3.5 feet

Sunlight Requirements

Partial Sun to Partial Shade

Soil Type

Base-rich, well-drained calcareous soil, including loam, clay-loam, glacial till, or rocky material

Soil Drainage

Well-drained soil

Soil pH

Around pH 7 (neutral)

Bloom Color

Yellow

Bloom Time

Summer to Fall

Foliage Color

Green

Leaf Lifecycle

Deciduous

Growth Rate

Not numerically specified; population trends are stable.

Seasons of Interest

Summer and Fall

Attracts Wildlife

Attracts Halictid bees, other small bees, Syrphid flies, and other flies.