Q.How Do Get More And Larger Strawberries From My Strawberry Plants?
My strawberry plants themselves appear to be quite healthy with large dark green leaves and only one or two original leaves turning brown. But the berries, while tasting delicious, are few and far between and about the size of a marble. I live in the California Central Valley where we have hot dry summers and cool, hopefully rainy winters. I’m not really sure when the prime growing period is so I don’t know the best time to fertilize. I dug composted manure into the soil when I planted them in March. If you can give me some pointers I would be very grateful!

Certified GKH Gardening Expert
It sounds like they have, maybe, too much nitrogen and not enough phosphorus and potassium. This can affect fruit size, quality, and quantity. Sulfur may help, as well.
Here is an article that will help:
https://www.gardeningknowhow.com/edible/fruits/strawberry/growing-strawberry-plants.htm