Shepherdia canadensis
| Canadian buffaloberry (Shepherdia canadensis) | |
|---|---|
| |
| Scientific name | Shepherdia canadensis |
| Common names | Canadian buffaloberry, russet buffaloberry, soapberry, soopolallie |
| Genus | Shepherdia |
| Family | Elaeagnaceae |
| Order | Rosales |
| Habit | Deciduous shrub, commonly 3–13 feet tall |
| Flowering | Early spring; male and female plants are separate |
| Fruit | Red or yellowish, ripening in mid to late summer |
| Years to fruit | About 4–6 years in one horticultural data sheet |
Shepherdia canadensis, the Canadian buffaloberry, is a deciduous shrub of open woods, thickets, riverbanks and rocky slopes. It is accepted as a species in Shepherdia; Elaeagnus canadensis, Hippophae canadensis and Lepargyraea canadensis are among the listed synonyms.[1] The common names russet buffaloberry, soapberry and soopolallie are also used.
Description[edit | edit source]
Canadian buffaloberry is a rounded shrub with opposite-looking silvery foliage and separate male and female plants. The small, light yellow-green flowers appear in early spring. Female plants bear bright red, drupe-like achenes, although yellowish fruit is also recorded; ripening is generally in mid to late summer.[2][3] The plant is commonly described as 3–13 feet tall, with size varying among sites and records.[2]
The species occurs in dry-to-moist open woods, thickets, riverbanks, slopes and rocky woods. The recorded substrates include rocky, sandy and gravelly soils, including nutrient-poor ground.[4][2]
Cultivation[edit | edit source]
Soil and water[edit | edit source]
Start with a well-drained medium or soil that resembles the species' recorded rocky, sandy or gravelly settings rather than a persistently saturated bed. Its native settings range from dry to moist, so drainage and establishment moisture are both important. A Glacier National Park nursery protocol irrigated when the medium surface dried and notes that its plants did not tolerate frequent irrigation under that production regime; that is a protocol-specific guide, not a universal watering schedule.[5]
Water newly planted shrubs consistently while roots establish, then allow the root zone to dry between irrigations where the site drains well. The University of Washington sheet describes established plants as drought resistant, but this should not be used to justify droughting a recent transplant or a container-grown plant.[4]
Sun and humidity[edit | edit source]
The species is recorded from partial shade as well as open woods and exposed slopes. A site with morning or filtered sun and good drainage is a reasonable starting point where summers are hot or dry; a more open position can suit plants acclimated to it. These are habitat-based cultivation implications rather than a fixed shade requirement.[6][4]
Seasonal changes[edit | edit source]
Canadian buffaloberry is deciduous. Flowering occurs in early spring, before the red fruit ripens in mid to late summer.[2] Maintain establishment moisture during active growth, and avoid treating the winter-dormant shrub as though it needs the same irrigation as a leafy container plant. In the native cool-season rhythm, exposed plants should be allowed to experience dormancy rather than being kept constantly warm and wet.
Propagation[edit | edit source]
Seed is collected in autumn and should not be allowed to dry before treatment. The University of Washington sheet records difficult germination, a minimum of 60 days of cold stratification, and root-crown sprout cuttings as its most successful stated vegetative method; it also lists July and August as the timing for half-ripe cuttings.[4]
A Glacier National Park production protocol cleaned seed, stored it at 3–5 °C for up to five years, used wet-tumbling scarification, and followed it with 90 days of cold, moist stratification at 1–3 °C. Its reported germination was 49–75% and non-uniform under the stated nursery conditions.[5] These values belong to the named ecotype and protocol, not to every seed lot.
A recent replicated experiment tested several cold-stratification periods with low-concentration acid scarification. Under its tested seed-lot and nursery conditions, one-hour acid treatment combined with 12 weeks of stratification produced an 82% germination result.[7] Acid scarification requires trained handling and appropriate laboratory or nursery safety controls; the result is not a recommendation to improvise a household acid treatment.
Flowering, fruiting, and harvest[edit | edit source]
Male and female flowers occur on separate shrubs, so fruit production requires access to both sexes. The flowers are small and appear in early spring; female plants carry the fruit, which generally ripens in mid to late summer.[2][3] A University of Washington data sheet gives about four to six years to fruiting, but age to first crop can vary with propagation, site and plant development.[4]
Harvest ripe fruit when it has developed its mature red or yellowish color and is readily removable, taking care not to treat color alone as proof of good flavor. An attributed GrowingFruit.org discussion describes considerable wild variation, including one bush with pleasant sweet-tart fruit, and another observation that early flowering may be followed by a fruitless year. The thread has incomplete location and plant-history details and mixes S. canadensis with S. argentea, so these remain individual observations rather than general harvest or crop-failure rules.[8]
Fruit and uses[edit | edit source]
The fruit is commonly described as bitter. A USDA plant guide records a low concentration of a foaming saponin and traditional use in a whipped preparation often called Indian ice cream; it states that thorough cooking breaks down the saponin.[9] The bitter flavor and preparation requirement make this a specialized traditional food rather than an ordinary sweet berry. Do not infer dosage, medicinal effects or universal raw-fruit safety from these records.
Photos[edit | edit source]
References[edit | edit source]
- ↑ [5] Propagation protocol for production of container Shepherdia canadensis Nutt. plants | Native Plant Network.
- ↑ [7] Scarification with a Low Concentration of Acid Facilitates Water Acquisition and Minimizes Cold Stratification Duration, Improving the Seed Germination of Canadian Buffaloberry.
Image credits[edit | edit source]
- Shepherdia canadensis 5459.JPG: pistillate plant and flowers; Walter Siegmund; Wikimedia Commons file page; Creative Commons Attribution-ShareAlike 3.0 Unported (CC BY-SA 3.0). Changes, if any, should be indicated.
- Shepherdia canadensis 38574.JPG: staminate plant and flowers; Walter Siegmund; Wikimedia Commons file page; Creative Commons Attribution-ShareAlike 3.0 Unported (CC BY-SA 3.0). Changes, if any, should be indicated.
