The investigations were carried out in the collection pears garden of the Lithuanian Institute of Horticulture in 2004.The aim of the work was to evaluate the manifestation of biological and morfometrical charakteristics of pears varieties of different origin to distinguish the desireable charakteristics and to recommend the varieties that are suitable for further selection in Lithuania. 161 pear cultivars were investigated. Phenological phases, their begginnig and duration, blossom injuries caused by spring frost, end of vegetation and fruits morphometrical parameters were evaluated. The latter two characters were estimated according to the scale 0 – 5: 0 – flowers not injured, 5 – all flowers injured in inflorescence. At the end of vegetation: 0 – leaf fall not started, 5 – all leaves are fallen. It was ascertained that 2,5  of investigated pear cultivars came into bloom on April 30. the phase of full bloom lasted for 12 days. On May 14 air temperature 1,5 m above land during spring frost dropped up to – 3,1 C degrees. Twelve cultivars did not show any symptoms of injury by frost, but blossoms of 12 ones were heavily damaged or killed. At the beginnig of November leaves were not fallen on fruit trees of 50 % pear cultivars and only 8 – 10 % cultivars ended vegetation.