Try adding bat guano to the soil to boost phosphorus levels.

Use lots of organic matter when planting. Try a combo of compost and composted manure or worm castings, then add 2-4 inches of the organic matter and mix into the planting bed or potting soil.

The plants need at least 12 inches of well-drained, loamy soil. 

Strawberries prefer slightly acidic soil so add soil sulfur if the soil is alkaline, which is usually the case here.

Berries need adequate phosphorus to fruit properly, so Sarah suggests adding bat guano. I bought Phos Bat by Buried Treasure, whose motto is “Like Pirate Gold for Your Plants.”

Toss in 1-2 tablespoons of Phos Bat or another guano-based fertilizer in each planting hole, Sarah says.