The saskatoon serviceberry (Amelanchier alnifolia) grows in thickets along lake edges and is found in northwest Iowa.
Hardiness: Zones 3 through 6
Growth Rate: Slow
Mature Shape: Variable can form thickets. Deciduous shrub or small tree.
Height: 10-20 feet
Width: 4 -8 feet
Site Requirements: Prefers full sun but tolerates partial shade on moist soils
Flowering Dates: May - June
Seed Dispersal Dates: July - August
Seed Bearing Age: 3-5 years
Seed Bearing Frequency: Yearly
Seed Stratification: Prechill for 4 months at 34°F to 40°F