Start seeds indoors 6-8 weeks before last frost to get an earlier harvest.
Sow 0.2 inches (0.5 cm) deep with a guideline distance of 0.98 inches (2.5 cm).Thin to 8-inches apart when seedlings are 2-3 inches tall.
Long Island Mammoth is hardy, so ensure you wait until all danger of frost has passed in your area before considering planting outside.This plant should be harvested while there are still lots of green blooms. Uproot the entire plant and dry it upside-down in a paper bag.
This variety tends to mature and be ready for harvest in mid summer.