Seasonal development peculiarities of the genus Crataegus L. plants in the Krasnoyarsk forest steppe conditions

As a result of the seasonal development of 29-31-year-old Crataegus L. genusplants in 2009-2010 the authors come to the conclusion that the local and the introduced species of Crataegus L. genus plantsin the arboretum have the full development cycle, blossom and fructify regularly that indicates to their successful adaption in the Middle Siberia central part.