Q.How Do I Feed Strawberry Plants
Brown leaves always in July
Certified GKH Gardening Expert
Strawberries are, best, fed by adding layers of compost each year. They can, also, be fed with a 10-10-10 all purpose fertilizer.
Keep in mind that browning leaves will more than likely be an overwatering issue. Make sure that the soil has plenty of time to dry out, down to a few inches, to allow the roots a chance to breathe. Root suffocation is the most common cause of losing strawberry plants.
Also, keep in mind that zone 9, which is where you are, is the very highest zone that a strawberry can survive. This means that you should expect the plants to die off during the hot summer months, unless these are planted in partial shade, or a shade cloth is put up during the hotter months. Strawberries do not tolerate heat very well.
This article will help you to feed strawberries:
https://www.gardeningknowhow.com/edible/fruits/strawberry/fertilizing-strawberry-plants.htm
This article will help you with the general care of them:
https://www.gardeningknowhow.com/edible/fruits/strawberry/growing-strawberry-plants.htm