For more berries, you should make sure to replace your entire bed after 3-5 years. Once the strawberry plants are older than five years, they start to decrease in productivity. By replacing your beds the younger plants will be able to take over and produce lots of new strawberries.
Instead of using commercial fertilizers and plant food, why not use some scraps from your kitchen that would otherwise end up in the trash or compost bin to amend and improve your garden soil naturally? Inexpensive and easy, these are my favorite ways to get my garden ready for spring planting. Eggshells, banana peels, Epsom salts, coffee grounds. Find out more at http://www.fresheggsdaily.com/2016/06/7-ways-to-improve-your-garden-soil.html