200 Seeds - Acmella oleracea Seeds - Toothache Plant - Tropical Perennial- 200 Seeds - Acmella oleracea Seeds - Toothache Plant - Tropical Perennial- Tropical perennial grown as an annual in the temperate north. 120 days to maturity. Native to Brazil. This particular strain is green leaved and has very conical flowers, yellow, with the characteristic bright crimson "fisheye" at the apex., probably the strongest variety for use in medicine. Acmella oleracea , also known under its old names Spilanthes oleracea and Spilanthes acmella and commonly referred to as Spilanthes Extract, is a flowering herb in the plant family Asteraceae , also known as toothache plant or paracress as the leaves and flower heads contain an analgesic agent spilanthol used to numb toothache.