Open-pollinated. Known to herbalists as the Toothache Plant. Spilanthes’ tingling and mouth-numbing properties appear rapidly and last a while. Also known as Salad Cress, it was introduced from Brazil to North America. Use its bronzy-purple leaves in salad or chew the leaves and flowers for temporary pain relief. Its immune-stimulating properties are giving it a wider audience. Highly frost-sensitive annual. Makes a colorful border planting in fertile moist soil.