![]() ![]() Only the most common cultivars or those of special interest are listed. These dates are averages of many years of observations. Table 2, Average First Harvest Dates for Sweet and Tart Cherries, shows average dates of first commercial harvest of sweet and tart cherry cultivars at the University of Guelph, Department of Plant Agriculture, Vineland and Ridgetown College, Cedar Springs. Harvest dates are an important factor to fruit growers, sales agents, processors and nurserymen. Box 6000, Summerland, British Columbia, V0H 1Z0. Anyone interested in testing selections should contact: Okanagan Plant Improvement Company Ltd., P.O. Also, various selections are covered under various restricted propagation agreements. The newly named cultivars are currently being protected under Plant Breeders Rights. There are currently several named cherry cultivars that have been introduced and selections being tested developed from the breeding program from Agriculture And Agri-Food Canada (AAFC), Summerland, British Columbia. Recommended Sweet and Tart Cherry Cultivars for Ontario Hardiness Zones To ensure fruiting, only grow sweet cherries in hardiness zones 7a and 7b and tart cherries, in zones 5b, 6a, 6b, 7a and 7b. Spring frost during bloom is also a threat in some regions. Sweet and tart cherries are grown in regions of Ontario where winter temperatures are severe enough to cause cold injury to shoots, fruit spurs, trunks and even, roots. Promising new cultivars that have not been extensively tested yet are recommended under "Trial Planting". Self-fruitful cultivars and selections are also identified. Others may have value only for special markets, for example, early cultivars for roadside stands. Some may have proven valuable in previous trial plantings and now warrant limited commercial planting. Cultivars listed under "Limited Planting" have value, but their planting should be limited for various reasons. Those listed under "General Planting" are mainly well known cultivars with proven performance and established market value. Recommended cherry cultivars are listed in order of maturity in 3 groups in Table 1, Recommended Sweet and Tart Cherry Cultivars for Ontario. A cultivar is any horticulturally recognized and named type or sort that can only be maintained through vegetative propagation or the use of selected breeding lines and seed sources. Cultivar, a contraction of "cultivated variety," replaces the older and confusing term "variety," which also refers to recognizable types within a species that maintain their distinguishing characteristics in the wild state. ![]() The term "cultivar" is used throughout this Factsheet. Valuable assistance was provided in consultation with growers, shipper/dealers, nurseries, processors and the Ontario Tender Fruit Producers' Marketing Board (OTFPMB). Recommendations for planting cultivars and adapted areas within the province have been determined by University of Guelph, Department of Plant Agriculture, Vineland, Agriculture and Agri-Food Canada (AAFC) and the Ontario Ministry of Agriculture and Food (OMAFRA). This Factsheet provides information that will guide commercial growers in selecting fruit cultivars to plant.
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