Choose a site in full sun with good air circulation and not prone to standing water. A slightly elevated, sloping site is preferred. Space dwarf varieties at least 10 feet apart and standard varieties at least 15 feet apart. If you are planting rows of Korean pears, space the rows 16 to 20 feet apart.
Soak the roots of the Korean pear tree for 30 to 60 minutes before planting.
Place the pear tree into the center of the hole and spread the roots out around the hole. Fill the hole with water and begin adding the soil and compost into the hole in 2-inch layers, subsoil first. The water will help the soil settle around the roots, preventing air pockets. Adjust the tree as you add soil to ensure that the top of the hole is level with the top of the root ball. End with a layer of topsoil.
Turn the shovel upside down and poke holes all the way around the rootball with the handle to eliminate air pockets. Sprinkle 1 cup of Epsom salt around the tree and water it well. Epsom salt contains magnesium, which helps roots establish.
Water every other day for two weeks, twice a week for two weeks and then once a week in the absence of at least 1 inch of rain. Fertilize after four weeks with a fruit tree fertilizer according to label directions.