How To Help an Orange Tree Produce Sweet Oranges

Step 1
Put the orange tree in the right site, where it will receive full sun for at least eight hours every day. The tree won't bloom or bear fruit if it doesn't get the right amount of sunshine. If you can move your orange tree, do so. If you can't move the tree, prune away any surrounding foliage to open up the area.

Step 2
Increase the orange tree's nutrition by amending the soil around its trunk with a mix of quick-draining soil and organic compost. Add a dose of fruit fertilizer to the orange tree's soil in early spring to promote growth and blooming

Step 3
Water orange trees with 2 to 3 inches of water a week. Increase your watering when the tree begins blooming and bearing fruit, as increased water at that time will encourage bigger, juicier oranges.

Step 4
Fertilize orange trees with fruit-specific or phosphorous and potassium fertilizer at the start of the fruiting period to encourage better fruiting and ripening. Orange trees require additional resources to bear fruit, and will bear larger, sweeter fruit if the right nutrition is available.