// SPECIES PROFILE · ANNUAL · NATIVE

Marsh parsley

Cyclospermum leptophyllum

Marsh parsley (Cyclospermum leptophyllum) is a annual in the — family. Native range includes AR, OK. Hardy in zones 3a–11b. Blooms Apr–Jun.

// QUICK FACTS

Family: —
Group: annual
Native range: Native to 13 U.S. states, including AL, AR, AZ, FL, GA, MI…
USDA hardiness: Zones 3a–11b
Mature size: —
Sun: —
Water: —
Bloom: Apr–Jun
Wildlife value: Pollinator and wildlife support
Ecological role: native species profile

Marsh parsley (Cyclospermum leptophyllum) — *Cyclospermum leptophyllum* — Marsh parsley. Photo by Forest & Kim Starr via Wikimedia Commons (CC BY 3.0).

Field Notes

[ growing · ecology · siting · care ]

Marsh parsley (Cyclospermum leptophyllum) is a annual in the — family. Native range includes AR, OK. Hardy in zones 3a–11b. Blooms Apr–Jun.

Why it's on this list: native species profile. Native-range data from the Lady Bird Johnson Wildflower Center (NPIN), cross-checked against iNaturalist observations. Part of Rooted Revival's regional native plant catalog — true natives for Oklahoma, Arkansas, Missouri and Kansas.

Companion Planting

[ guild · polyculture · cross-layer pairings ]

In the same native range, marsh parsley pairs naturally with: Common Sunflower (Helianthus annuus), Indian Blanket (Gaillardia pulchella), Plains Coreopsis (Coreopsis tinctoria), Swamp verbena (Verbena hastata).