Highbush blueberries are hardy in central and southern Iowa. Plants develop into 6 to 8 foot shrubs. Suggested varieties for Iowa include 'Blueray', 'Patriot', 'Elliott', 'Coville', and 'Collins'. Half-high blueberries possess greater cold hardiness and are the best choice for gardeners in northern Iowa. Suggested varieties are 'Northblue' and 'Northsky'.
Spring is the best time to plant blueberries.
The roots of dormant, bare-root plants should be soaked in water for about an hour before planting. Dig a hole approximately 18 to 24 inches deep and 2 feet wide. Set the plant at the same depth it grew in the nursery. Also, thoroughly water each blueberry plant. Highbush blueberries should be spaced 4 to 6 feet apart.