Everbearing plants will likely produce more fruit this season if you remove the runners. June bearers will likely produce more fruit next season if you remove the runners. You probably want to let at least a couple of runners make fresh plants on each parent plant. That keeps a stock of young vigorous plants in your bed and keeps the bed going for a few years.
Eclectic gardening style, drawing from 45 years of interest and experience. Mostly plant in raised beds and containers primarily using intensive gardening techniques.