An experiment was carried out at the Experimental-Didactic Station in Swadzim (52^o26’ N; 16º45’ E), which is part of the Poznań University of Life Sciences, in years 2006-2008. The aim of the research was to examine the effect of weather conditions on the yield of ten sugar maize hybrids. Length of growth period, yield size, first class cobs share, number of grains in the cobs, and cob length were defined. It was found that the length of growth period and weather conditions have an effect on yield size and first class cobs share. The best sugar maize hybrids for processing proved to be ‘Sweet Wonder’, ‘Rebecca’, and ‘Sweet Nugget’. The best for direct consumption were ‘Sweet Wonder’, ‘Rebecca’, and ‘Sweet Talk’.

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