I germinated some strawberry seeds from strawberries that I bought from the fruit guy on the corner sometime in October of last year. Once the plants got big enough to flower, they started producing runners. I went on holiday and the plants had some water stress where a few died. The one that was making runners and seems to grow the prettiest strawberries, completely stopped shooting runners, but they're making a bunch of strawberries.
I've been feeding the plants high phosphorus fertilizer, could that be the culprit? If I switch to a high nitrogen fertilizer and cut off all of the flowers, will it start shooting runners again?