Louisiana Iris 'Abbeville Red' (Iris × nelsonii): Rare Native Hybrid

The Louisiana Iris 'Abbeville Red', also known as Abbeville Swamp Iris, is a remarkable natural hybrid, botanically Iris × nelsonii. It is famous for its intense, true red color—a rarity among native North American irises.

True Red Rarity

Iris × nelsonii produces large, flaring flowers of a rich, velvety red, sometimes with a slightly darker veining. The color is the closest to true red found in the Louisiana iris species complex. The plants are robust, reaching 3 to 4 feet tall, with broad, arching foliage. They bloom in mid to late spring.

Swamp Habitat and Culture

This iris is native to a very limited area in the Abbeville, Louisiana region, growing in freshwater swamps and wet woods. In cultivation, it requires consistently moist to wet, acidic soil and full sun to part shade. It is a prized plant for bog gardens, pond edges, and conservation collections. It is hardy in zones 6 to 9.

Conservation Significance

Iris × nelsonii is a naturally occurring hybrid between Iris fulva (red) and Iris brevicaulis (blue), with possible input from Iris giganticaerulea. Its limited natural range makes it a plant of conservation concern. The synonym Limniris × nelsonii reflects its classification in the Louisiana iris genus.