Amelanchier alnofolia 'Thiessen'
The largest-fruited cultivar available, and also the earliest bloomer. It will grow to about 12'-15' with an open habit. Suckers moderately. It has good flavor and productivity. It's a consistent producer and a great commercial choice. Selected in Saskatchewan and introduced in 1978.
USDA Zone: 3-9
Grow Height: 12' unpruned
Sun: Full Sun