This is from another response to your same question-
"Cut back your June-bearing strawberries any time after they have finished fruiting. Cut back ever-bearing strawberries in early fall. Mowing them to about 3" high works if you do not damage the crown.
Followup question---After the regrowth from cutting it back do you leave the regrowth alone until the next growing season?
Answer---Yes - you do not need to keep cutting it back.
-Joy Jones Oregon State University Extension Educator, 4-H & General Agriculture"
For your reference, here are some Extension links on Strawberries-
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