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Rosaceae
Trees and shrubs
'Thiessen' Serviceberry
Hardiness
Zone 2
Discover the plant
Family
Rosaceae
Amelanchier alnifolia 'Thiessen', or 'Thiessen' saskatoon berry, is a vigorous fruiting cultivar renowned for producing some of the largest fruits of the species, with sweet, juicy, and very sugary flesh. Its spring bloom of delicate white flower clusters attracts pollinators, while its deep green foliage creates a rich and dense mass effect, enhanced by warm colors in the fall. Ideal for edible hedges, natural orchards, or food crops, it offers excellent yield for fresh consumption, jams, juices, or drying. Robust and easy to maintain, 'Thiessen' combines beauty, abundant production, and reliable hardiness, while supporting local biodiversity.
Soil and care
The rightconditions.
Fertilization
Mature compost or natural fertilizer in spring
Bloom and dimensions
The completeprofile.
Bloom periodSpring
Flower colorPure white
Foliage colorDark green → orange-yellow
Foliage typeObsolete
FruitingVery large, purplish-blue, juicy fruit with an intense sweet flavor
Maximum height4 m (13 ft)
Maximum width10 ft (3 m)
Growth rateModerate
Hardiness zoneZone 2
Minimum temperature-40°C
Its strengths, naturally.
Safe for pets
Pets
Attracts or supports pollinating insects
Pollinators
Plants that attract butterflies
Butterflies
Less attractive or generally tolerated by deer
Deer
