These are the three ways to propagate new strawberry plants. The easiest is from runner, I like clipping them and throwing them straight in the water. If they droop, take leaves. Or I leave them Attached to the mother and pin them down in Rockwool for 12 to 15 days. Another way is from root division with crowns, similar to runners, once detached in water, clipping any dropping leaves is perfect. Last with seeds I skip cold stratification most of the time but store them in the fridge just incase.