This Organic Arugula has been selected for nearly a decade for significant cold hardiness, abundant and vigorous spring regrowth as well as mild flavor and disease resistance.
400 seeds.  From Fruition Seeds in Naples NY
 
Direct Sow (recommended): Early Spring, sow 20-30 seeds per foot 1/8″ deep for baby greens, 3 seeds per foot thinned to 2 for full size. Keep moist to slow bolting; sow every 2-3 weeks until 1 month before frost for continual supply.
Transplant (for full size only): Early Spring, sow indoors, 2 seeds per cell and thin to 1; transplant 2-3 week old seedlings at 8-10″.
 
Sowing Date: As soon as soil can be worked
Seed Depth: 1/8 inch
Days to Germination: 4-7
Days to Maturity: 105
Plant spacing after thinning: 6-10″ for full size