By Robert Cox, Colorado State University Cooperative Extension, horticulture agent
In areas where other apple trees can be grown, the "5 in 1" or "3 in 1" combination trees are interesting alternatives. Three or five apple varieties are bud-grafted onto the same tree. Varieties on each combination tree pollinate one another, eliminating the need to plant a second apple tree of another variety in your yard. However, varieties of apple on some combination trees may not ripen in our short growing season and may be sensitive to fire blight. Look for combination trees with varieties that are resistant to fire blight and ripen by early October in Zone 5.
Photo: Judy Sedbrook
© CSU/Denver County Extension Master Gardener 2010
888 E. Iliff Avenue, Denver, CO 80210
Date last revised: 01/05/2010