Ferry-Morse 2161 Stevia Herb Seeds (10 Milligram Packet) This Ferry-Morse seed packet contains stevia herbs which are ready to harvest after 90 to 150 days This herb is a natural sweetener; guaranteed to grow 90-150 days to harvest Do not cover seed, 2-foot to hill spacing, and 6-inch plant spacing Includes one, 10-milligram packet