// SPECIES PROFILE · PERENNIAL · NATIVE

Southern yellow loosestrife

Lysimachia tonsa

Southern yellow loosestrife (Lysimachia tonsa) is a perennial in the — family. Native range includes AR — verified against the Lady Bird Johnson Wildflower Center native distribution database. Hardy in zones 5a–10a. Mature size 6"–3'. Blooms May–Sep.

// QUICK FACTS

Family: —
Group: perennial
Native range: Native to 10 U.S. states, including AL, AR, GA, KY, NC, SC…
USDA hardiness: Zones 5a–10a
Mature size: 6"–3'
Sun: —
Water: —
Bloom: May–Sep
Wildlife value: Pollinator and wildlife support
Ecological role: native species profile

Southern yellow loosestrife (Lysimachia tonsa) — *Lysimachia tonsa* — Southern yellow loosestrife. Photo via iNaturalist — (c) Alaina Krakowiak, some rights reserved (CC BY).

Field Notes

[ growing · ecology · siting · care ]

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, southern yellow loosestrife pairs naturally with: Broadleaf Arrowhead (Sagittaria latifolia), Blue-Eyed Grass (Sisyrinchium angustifolium), Butterfly Milkweed (Asclepias tuberosa), Cardinal Flower (Lobelia cardinalis).