Plant this tree in full sun in Zones 5 to 8, and watch it grow 8 to 10 feet tall. One popular columnar apple tree cultivar, Tasty Red, boasts sweet, crunchy fruits comparable to a McIntosh apple.

Kumquat Tree Kumquat trees (Citrus japonica) are a great sweet fruit to grow year-round inside your home. This acidic, juicy plant grows well in USDA Hardiness Zones 8 to 10, so you can recreate ...

They're also naturally resistant to scab, so they'll require less maintenance than other apple trees. Zones: 4 to 9 Size: Standard trees grow 15 to 20 feet tall and wide; dwarf varieties are smaller.