Lilium philadelphicum, or wood lily, is a 1–3 foot herbaceous perennial with large, showy, upward‑facing orange‑red flowers. It is native across Canada and the northern United States, including much of Pennsylvania, where it grows in dry to mesic open woods, meadows, borders, clearings, and prairie‑like openings, usually as solitary plants that are easy to overlook unless in bloom. Wood lily prefers full sun to light shade and well‑drained, often sandy or rocky soils and is the only native Pennsylvania lily with upright blossoms.

The plant bears 2–3 inch, bright orange to red, upward‑facing blooms, each with scattered reddish‑brown spots and a yellow base on each tepal. Although the flowers appear clustered at the top of the smooth, erect stem, each stem bears a single terminal umbel with 1–4 erect flowers. Each flower has six tepals that spread outward and curve slightly backward, creating an open, bowl‑shaped appearance rather than a true funnel.

A whorl of 3 to 6 narrow, linear‑lanceolate leaves sits just below the flowers, adding to the plant’s distinctive appearance. Below this upper whorl, additional leaves continue down the stem, becoming more scattered or alternate toward the base. All leaves are toothless, hairless, stalkless, and typically 1–3 inches long.

Cross‑pollination occurs when butterflies and native bees visit the showy, upward‑facing flowers, transferring pollen as they forage. Flowers release abundant pollen early in bloom and produce nectar irregularly during the first several days of anthesis.

Wood lily is North America’s most wide‑ranging native lily, but it has declined in the Northeast as prairie habitats have disappeared and white‑tailed deer populations have increased. Indigenous peoples harvested the bulbs for food and used them medicinally, including as poultices. The species epithet philadelphicum means “of Philadelphia,” referring to early collections made near the city.