Spiranthes praecox, the grass leaved ladies' tresses (sometimes spelled grassleaf ladies'-tresses), green-vein ladies'-tresses or sometimes giant ladies' tresses is a terrestrial orchid endemic to the United States, growing on the eastern coastal plains and around the Gulf Coast.

[1][2] Spiranthes praecox is a herbaceous species growing 20–75 cm high, with up to 7 long basal leaves.

[1][3] Form Spiranthes praecox forma albolabia has pure white lips with yellowish instead of green veins.

[3] Spiranthes praecox is native to Alabama, Arkansas, Delaware, Florida, Georgia, Louisiana, Maryland, Mississippi, Missouri, New Jersey, North Carolina, Oklahoma, South Carolina, Texas, Virginia.

[4] It grows in coastal planes in dry to moist prairies, meadows, pinelands, and bogs.