I set out a new row of strawberry plants in April. They were flourishing and putting out runners like they should. Then leaves with stem were on the ground. Now half the row is flourishing even though there are a few leaves off but half the row has gone backwards with far less leaves and runners. I have a huge deer problem here so the row is covered with wire hoops and deer netting. I see no sign of insects and it doesn’t seem rabbits would find their way in and break leaves off with a stem. I don’t want to lose my heirloom plants. I’ve moved them every place I’ve lived for 60 years. Help!