Is there a sure-fire way of determining whether a raspberry plant is ever-bearing or summer bearing? I have raspberries growing on my property that were planted by a previous owner of long ago. I have read on-line that everbearing raspberries can be mowed down at the end of the summer and they will come back and bear fruit the following year. I would like very much to mow down these plants at the end of a season but don't want to gamble on losing these plants.