Shipping Policy: All orders are shipped out via USPS First Class mail on the next business day. However, only orders $10 or more will receive a tracking number. View our store for more than 100 other garden seed options! Name: Mesclun Mix Lettuce Type: Heirloom Non-GMO Size at Maturity: 3-10″ Leaves Days to Maturity: 30-45 Days Light Requirement: Full Sun/Partial Shade Planting Season: Cool Season Planting Depth: 1/8 inch Plant Spacing: 4-8 inches