Satsumas, known botanically as Citrus reticulata, are small fruit-bearing trees native to Japan and widely grown for winter harvest. Satsuma trees flower in spring and produce small orange globes of fruit beginning in October. They are nearly seedless, sweet, with thin skin and juicy to the bite. Satsumas should be left to ripen on the tree to maximize flavor and develop a rich orange hue.
Select a planting location for your Satsuma that has full sun exposure and ambient temperatures consistently above 26 degrees Fahrenheit.
Select a growing location in the ground or in a large planter that provides space for the tree at maturity, which will be roughly 6 feet in height and 4 to 5 feet in spread.
Prepare a planting bed of nutrient-rich but loose potting mix or garden soil. Till in a slow-release citrus fertilizer with a guaranteed analysis of roughly 10-15-15 according to package label directions before planting.
Water your Satsuma tree when the soil has dried to a depth of an inch. Depending on your climate, this might translate into twice-weekly waterings or watering every two weeks to once a month in moist climates or when it rains. Be careful not to overwater as this is a common mistake.
Repeat application of the slow-release fertilizer in the spring and fall each year according to label dosing directions, and water in well.