Pityrogramma trifoliata 'Salta'

Trifoliate Argentine Swamp Fern

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Item #: 5519

Zones: 7b to 10b, at least

Dormancy: Winter

Height: 60" tall

Culture: Part Sun to Light Shade

Origin: Argentina

Pot Size: 3.5" pot (24 fl. oz/0.7 L)

(aka: Pityrogramma trifoliata, Trismeria trifoliata A1AG-103) When I first saw Trismeria trifoliata growing at 3,300' elevation in the northern Argentine province of Salta, I couldn't believe it was a fern...despite evidence to the contrary. This unusual fern is composed of 5' tall upright fronds with a contrasting black stipe. The spreading rhizomes form a large colony to 6' wide in 3 years. In the wild, Trismeria trifoliata grows in seasonally flooded low areas but has shown amazing adaptability under a variety of less-favorable garden conditions. It has taken 9 degrees F with no problem, so we are unsure of its northern hardiness limits.