Lettuce Leaf - Lollo Rosso (Organic) - Microgreens Seeds14 to 16 dayspossibly 21 days if growing to baby green stage. Organic Non GMO Lollo Rosso Lettuce seeds for growing as microgreens. More of a long term, cool season microgreen crop, it grows quite well in your home even if you have cold drafts. Great mild flavor and easy to harvest! Select a Different Use for This Seed: Garden Growing Organic Lollo Rosso Lettuce Microgreens Seeds Presoak: N A Other Names: Head Lettuce Days to Maturity: 14 16 days (21