Featured plantsA look at some of the interesting and rare plant groups in the collection and their origins.
4-1 Tilia x flavescens 'Dropmore', Dropmore linden
Les Kerr (1902-83) was Superintendent of the Forest Nursery Station in Sutherland, Saskatchewan (now part of Saskatoon) where he established the artful landscaping that is still in place today. Prior to this he worked on fruit breeding at the Morden Research Station in Manitoba. In the collection:
Malus x 'Pink Cascade' ornamental crabapple
Malus x 'Sutherland' ornamental crabapple
Caragana arborescens 'Sutherland' caragana - an upright selection of common caragana.
Percy Wright (1899-1989) was a plant breeder and promoter of horticulture in the Saskatoon area, for which he received the D. R. Robinson Award from the Saskatchewan Horticultural Association in 1976. Mr. Wright also was a plant nursery owner and a writer. In the collection:
Malus x 'Thunderchild' ornamental crabapple - remains a very poular variety that is resistant to fireblight.
Rosa x 'Hazeldean' rose (R. spinosissima x Persian Yellow) - a beautiful and hardy yellow rose given a Scottish name for the "Scotch" rose parent.
Dr. Cecil Patterson (1891-1961) became the first head of the Department of Horticulture at the University of Saskatchewan in 1922. A tireless promoter of prairie horticulture, he also directed the landscaping at the University during this time.
Prunus x 'Patterson Pride' plum (native plum x P. salicina) - a deep red plum of excellent quality.
Frank Skinner (1882 -1967) of Dropmore, Manitoba, was a dedicated plant breeder and nursery owner with a large legacy of hardy plant material for the Canadian prairies. In the collection:
Lonicera x brownii 'Dropmore scarlet' honeysuckle (L. sempervirens x L. hirsuta)
Tilia x flavescens 'Dropmore' linden (T. americana x T. cordata)
Lonicera x bella 'Dropmore' honeysuckle (L. tatarica x L. morrowii)
Prunus padus var. commutata 'Dropmore' mayday
Rosa 'Beauty of Dropmore' rose
Syringa x prestoniae 'Hiawatha' lilac (S. villosa x S. reflexa)
Georges Bugnet (1879-1981) was a French Canadian writer, plant hybridizer, and self-taught botanist, living on a farm near Edmonton, Alberta. In the collection:
Lonicera caerulea var. edulis 'Georges Bugnet' honeysuckle
Lonicera caerulea var. edulis 'Julia Bugnet' honeysuckle
Rosa 'Marie Bugnet' rose
Rosa 'Therese Bugnet' rose - remains a popular hardy cultivar
13-37 Thua koraiensis, Korean arborvitae
Korean arborvitae arrived at the Arboretum in 1970, misidentified as Thuja occidentalis 'Koreana'. It grew into a multi-stemmed tree with spreading basal branches, cinnamon-coloured peeling bark, and a very distinctive under-leaf colour: chalky white.
Korean arborvitae is listed as vulnerable in the IUCN Red List of Threatened Species. It is declining from deforestation in its limited native habitat of mountain slopes in North Korea, South Korea and adjacent parts of China. It is estimated that only 250 to 1000 mature, reproducing trees exist in the wild.
Korean arborvitae is growing well in the Arboretum, where it is often overlooked in our row of eastern white cedar cultivars. It is rare in cultivation; our specimen appears to be the last survivor from the Prairie Regional Trials for Woody Ornamentals experiment. A young plant is also growing on the west end of the arboretum.
22-8 Picea asperata, dragon spruce
Dragon spruce was planted in the collection in 1967. It is a stout tree with massive lower branches, prickly foliage, and large cones.
Dragon spruce is listed as vulnerable in the IUCN Red List of Threatened Species. It occurs in the high mountains and riverbanks of west-central China, where it is declining in numbers. Logging and use in the production of aromatic oils and resin has contributed to the decline of the species. In the wild this species may reach 45 m in height with a diameter of 1 m.
Saskatchewan's native plants are part of several ecoregions across the Province. In the southwest are the Cypress Hills with forests of lodgepole pine, the most easterly stands of this species in Canada. Southern Saskatchewan is a grassland region with woody plants such as skunkbush (Rhus trilobata), silver buffaloberry (Shepherdia argentea), and plains cottonwood (Populus deltoides). Saskatoon is part of the Aspen Parkland region, defined by stands of trembling aspen (Populus tremuloides). Boreal forest covers much of northern Saskatchewan with conifer species such as balsam fir (Abies balsamea). The extreme northeast of the Province is part of Canada's subarctic north, with species such as sweet gale (Myrica gale) and jackpine (Pinus banksiana).
24 - 13.1 Elaeagnus commutata, silverberry or wolf-willow
In the collection:
Abies balsamea, balsam fir
Acer spicatum, mountain maple
Alnus incana, speckled alder
Amelanchier alnifolia, Saskatoon serviceberry
Amelanchier sanguinea, roundleaf serviceberry
Arctostaphylos uva-ursi, kinnikinnick or bearberry
Artemesia cana, silver sagebrush
Betula neoalaskana, Alaska paper birch
Betula papyrifera, white or paper birch
Betula pumila var. glandulifera, bog birch
|Row||Scientific Name||Common Name||Year Planted|
|20-5||Abies balsamea||balsam fir||1966|
|15-28||Acer spicatum||mountain maple||2012|
|3-32||Alnus incana||speckled alder||2011|
|17-1||Alnus incana||speckled alder||2012|
|3-62||Amelanchier alnifolia||Saskatoon serviceberry||2006|
|3-59||Amelanchier sanguinea||roundleaf serviceberry||2006|
|11-39||Arctostaphylos uva-ursi||kinnikinnick or bearberry||2007|
|21-34||Artemesia cana||silver sagebrush||2013|
|8-1.1||Betula neoalaskana||Alaska paper birch||2012|
|8-4||Betula papyrifera||white or paper birch||1966|
|8-4.1||Betula papyrifera||white or paper birch||2012|
|10-1||Betula pumila var. glandulifera||bog birch||1974|
|10-10.1||Celastrus scandens||American bittersweet||2007|
|10-12.1||Clematis ligusticifolia||western white clematis||2013|
|19-17||Cornus sericea||red-osier dogwood||1974|
|7-24||Corylus americana||American hazel||2013|
|3-20||Corylus cornuta||beaked hazel||2006|
|10-4||Crataegus chrysocarpa||round-leaved hawthorn||1966|
|12-1||Crataegus douglasii||Douglas hawthorn||1972|
|12-6||Crataegus macracatha (succulenta)||fleshy hawthorn||1981|
|5-12||Diervilla lonicera||northern bush-honeysuckle||2006|
|24-13.1||Elaeagnus commutata||silverberry or wolf willow||1966|
|23-46||Empetrum nigrum||black crowberry||2011|
|16-2||Fraxinus pennsylvanica var. austinii||Austin green ash||1975|
|2-5||Fraxinus pennsylvanica var. subintegerrima||green ash||1966|
|13-48||Juniperus communis||common juniper||2006|
|11-2c||Juniperus horizontalis||creeping juniper||2011|
|19-20||Juniperus scopulorum||Rocky Mountain juniper||2013|
|10-2.1||Lonicera dioica||twining honeysuckle||2012|
|1-26||Lonicera involucrata||twinberry honeysuckle||1971|
|3-40||Lonicera involucrata||twinberry honeysuckle||2013|
|3-55||Lonicera oblongifolia||swamp fly honeysuckle||2012|
|3-60||Lonicera oblongifolia||swamp fly honeysuckle||2012|
|3-54||Lonicera villosa||mountain fly honeysuckle||2013|
|13-1||Myrica gale||sweet gale||2012|
|1-1||Parthenocissus inserta||thicket creeper||1974|
|18-23||Picea glauca||white spruce||1967|
|22-1||Picea glauca||white spruce||1966|
|20-8||Pinus banksiana||jack pine||1966|
|25-10||Pinus contorta var. latifolia||lodgepole pine||2007|
|6-7||Populus angustifolia||narrowleaf cottonwood||2007|
|25-8||Populus deltoides||plains cottonwood||1968|
|7-41||Potentilla fruticosa||shrubby cinquefoil or potentilla||1966|
|18-4||Prunus americana||wild plum||1966|
|19-13||Prunus pumila var. besseyi||western sandcherry||2006|
|16-1||Quercus macrocarpa||burr oak||1968|
|9-30||Rhus glabra||smooth sumac||1995|
|9-45||Ribes americanum||American black currant||1967|
|9-38||Ribes aureum||golden currant||1972|
|9-43||Ribes hirtellum||hairystem gooseberry||1967|
|9-41||Ribes oxycanthoides||Canada gooseberry||1974|
|9-39||Ribes triste||swamp red currant||1970|
|23-23||Rosa acicularis||prickly rose||2010|
|3-5||Salix bebbiana||beaked or bebb willow||2007|
|1-41||Salix candida||sageleaf willow||2008|
|1-35||Salix discolor||pussy willow||2010|
|9-2||Salix petiolaris||meadow willow||2013|
|18-16||Shepherdia argentea||silver buffaloberry||1973|
|9-16||Spiraea alba||narrow-leaved meadowsweet||1991|
|4-9||Ulmus americana||American elm||1966|
|5-30||Viburnum edule||low-bush cranberry||2011|
|5-28||Viburnum trilobum||high bush cranberry||1966|
5-22 Viburnum lentago, nannyberry
The Amur river is located in northeastern Asia. This region is home to many unique plant species and this is reflected in scientific names such as "amurensis" and "maackii" (for Richard Maack, Russian explorer). The similarity of the Amur region's climate to the Prairie Provinces allows us to grow many of these plants in the Arboretum.
10-9.1 Vitis amurensis, Amur grape
|Row||Scientific Name||Common Name||Year Planted|
|1-25||Acer ginnala||Amur maple||1968|
|5-37||Deutzia parviflora var. amurensis||Amur deutzia||2012|
|3-61||Ligustrum amurense||Amur privet||2013|
|5-9||Lonicera maackii||Amur honeysuckle||2006|
|18-15||Maackia amurensis||Amur maackia||1968|
|8-9||Phellodendron amurense||Amur cork tree||2007|
|9-22||Physocarpus amurensis||Amur ninebark||1966|
|18-7||Prunus maackii||Amur cherry||1973|
|18-26||Sorbus amurensis (pouhashanensis)||Amur mountainash||1969|
|19-47||Syringa reticulata subsp. amurensis||Amur lilac||1973|
|4-3||Tilia amurensis||Amur linden||2009|
|10-9.1||Vitis amurensis||Amur grape||2008|
18-15 Maackia amurensis, Amur maackia
18-14 Gymnocladus dioicus, Kentucky coffeetree.
A few young trees in the Arboretum are designated as endangered or threatened species in Canada. Although far from their native habitat and preferred climate, these plants are relatively isolated here from diseases and other threats, which may aid in their conservation. For example, butternut, an eastern Canadian species, is designated as endangered primarily because of a fungal disease, butternut canker.
Endangered and threatened Canadian species:
8-8.1 Betula lenta, cherry birch - endangered in Ontario; habitat loss, limited natural range.
18-14 Gymnocladus dioicus, Kentucky coffeetree - threatened in Ontario and nationally; deforestation.
6-14 Juglans cinerea, butternut - endangered in Ontario, Quebec, and New Brunswick; habitat loss, disease.
7-23 Morus rubra, red mulberry - endangered in Ontario and nationally; habitat loss, hybridization with non-native species.