Royal Oakleaf lettuce is an improved Oakleaf variety that is slower to bolt. Heads form large rosettes of uniform leaves that are heat resistant. Leaves are dark green and shiny with an oak leaf shape and many lobes. Download Free Vegetable Growing Guide PDF Lettuce Seeds - Leaf - Royal Oakleaf Download Free Vegetable Growing Guide PDF Sow seeds ¼" deep in full sun. After 45-50 days, leaves are ready for harvest and can be picked individually or harvested as a whole head. Use these non-bitter leaves as salad greens or add to dishes for a unique touch. Seed Variety: Lettuce Seeds - Leaf - Royal Oakleaf Latin Name: Lactuca sativa Days to Maturity: 45-50 Days - Annual Crop - Not Intended to Over-winter - All Zones in the U.S.A Germination Rate: High - Open Pollinated Seeds for: Farm & Garden Vegetable Seeds Seed Quality: Non-GMO - Heirloom - Premium Seeds Seeds Per Package: 1 g - Approximately 900 Seeds 1/4 oz - Approximately 6,370 Seeds 1 oz - Approximately 25,480 Seeds 4 oz - Approximately 100,000 Seeds 1 lb - Approximately 400,000 Seeds 5 lb - Approximately 2,000,000 Seeds 25 lb - Approximately 10,000,000 Seeds Mountain Valley Seed Company Brand - Independently Family Owned & Operated Small Seed Company - Premium Quality Seeds