I grew 5 different lettuce varieties and the crisp mint romaine was my favorite. The germination rate was awesome. The flavor is great. I planted April 1, it was the first lettuce to sprout and we have been harvesting all through the month of May and continue to have a healthy harvest even though it is June in the desert and the temperatures are in the 90s. It has not had any bitterness to date, which is why I wanted to try it. I'm so pleased. We planted the heads close together and snip the leaves after they get 3-5 inches tall and the plant grows more leaves. Love this one.