Strawberries are my favorite cover crop. I plant them in every inch of my raised beds once all my crops are planted in the spring. At fall, I turn them all over as green mulch into the raised beds. But first I carefully collect every runner made by the moms for next years crop of berries. I just keep them in a cold cardboard box in the garage and they stay dormant till next season. I also have some dedicated strawberry beds. It’s my kids favorite fruit. I like to plant them under my raspberries too. The blueberries grow too dense a canopy, so the under strawberries never make it.
Strawberry plants fruit 90%less fruit at year 3. The 1 and 2 year runners are the real producers. By year3 the big mama has a big enough root ball (rhizome) to reproduce more efficiently by division and runners. Like why bother to fruit. The young ones try to reproduce sexually w flowers and fruit. Commercial strawberry farmers always turn over their 3 yr old plants for baby runners.