Type
large-fruited, hardy
Serviceberry (Juneberry) variety
Thiessen Serviceberry (Juneberry)
Thiessen is known for some of the largest fruit among Saskatoon serviceberries. The berries have a sweet, mild flavor and are good eaten fresh.
Season
early summer
Best for
fresh eating, cold climates
About Thiessen
Thiessen is a saskatoon serviceberry known for especially large, sweet blue-purple berries. It is vigorous and can grow into a substantial multi-stemmed shrub.
Growing Thiessen Serviceberry (Juneberry)
Plant in full sun for the best crop and prune older stems periodically to keep picking height manageable. It is self-fertile, but protect ripening fruit from birds.
Full growing guide
For planting, care, pollination, and harvest that apply to all serviceberry (juneberry), see the complete guide.
How to grow Serviceberry (Juneberry)Other serviceberry (juneberry) varieties
Variety characteristics are general guidance for US home gardens; chill hours, hardiness, and pollination vary, so confirm suitability for your zone. Availability differs by supplier. Page updated Aug 4, 2026.