I put out 13-13-13 in late Feb or March after you see the tree putting out new growth.
Sprinkle the fertilizer out near the "drip" line by the outer limbs. I put out 4 to 6 cups depending on the size of the plant.
Then in May or early June........ I put out about 1/3 of what I put out in the early spring. Do not fertilize after June.
Watering is important if there is no rain for 2 or 3 weeks during the summer. If it is dry when the fruit is just starting to grow..... the plant will "drop" a lot or all the fruit. Some dropping of fruit is normal. When the plants are flowering, a hard rain can really hurt how much fruit will be produced that year.
I will "thin" out some of my smaller grapefruits, but not on other types of fruit.
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