Published on Organic Gardening (http://www.organicgardening.com)
Sow leek seed 8 weeks before the last spring frost to 12 weeks before the first fall frost. Seeds sprout in 7 to 12 days at 65° to 80°F. Grow seedlings at 60° to 70°F.
Links:
[1] http://www.organicgardening.com/seed-starting-leek