The experiments were carried out in 2005-2007. The aim of the study was the evaluation of the growth and yielding of sour cherry cultivars in central Poland. The explored cultivars differed in vigour, cropping and also in response to spring frost. The most vigorous, indicated by the trunk cross-sectional area (TCSA), length of one-year shoots and leaf area, were 'Sabina', 'Lucyna', 'Karneol' and 'Ujfehertoi Furtos'. The weakest in vigour were 'Northstar', 'Schattenmorelle IR-2' and 'Koral'. The best fruit set was observed in 'Schattenmorelle IR-2' and the worst in 'Karneol'. The cultivars 'Lucyna', 'Schattenmorelle IR-2', 'Sabina' and 'Vowi' gave the highest yield per tree. 'Karneol', 'Ujfehertoi Furtos', 'Northstar' and 'Debreceni Botermo' gave the lowest yield per tree. The greatest damage by the spring frosts of 2007 was observed in the following cultivars: 'Lucyna', 'Debreceni Botermo', 'Karneol' and 'Sabina'. The most resistant to spring frosts turned out to be 'Northstar' and 'Schattenmorelle IR-2'.
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