Renovate the strawberry patch after you pick your last berry. The plants produce runners at this time for the next year's growth and fruit production. Give the strawberry plants 4 to 6 lbs. of 12-12-12 granular fertilizer per 100 feet of planting to encourage new growth.
Cut the existing plants down to within 2 inches of the ground. Cut off all the foliage but don't damage the crowns. Pull excess strawberry plants from the aisles to narrow rows to 12 to 18 inches.
Thin the plants in the rows by half to give remaining plants more space. End with 5 to 6 plants per foot.
Lay 1/2 inch of topsoil or organic compost over the entire plot and water with 1 to 2 inches of water every week. Allow new runners to emerge and take root in your designated rows. Transplant runners if they sprout between rows.
Feed the new strawberry patch in late summer with 3 lbs. of 12-12-12 fertilizer per 100 feet of row. This feeding encourages fruit bud set.
Mulch the plants with 4 to 5 inches of mulch for winter.