Seed propagation is the most perspective for woody juniper (Juniperus L.). The collections of Kyiv Botanical Gardens contain the total of 11 species and 1 variety of juniper with «tree» life form. Given the collections conditions, quality seeds of 7 species have been objectively identified. Depending on the species, the generative cycle of juniper lasts 2—4 years. Percentage of high quality seeds for J. communis L., J. chinensis L., J. foetidissima Willd., J. virginiana L. varies within 33—70 %; J. excelsa M. Bieb., J. scopulorum Sarg., J. seravschanica Kom, 0—3 %; J. communis var. oblonga (M. Bieb.) Parl, 5,5—41 % in different years. The largest number of seeds throughout collection have been aborted during the pollination — fertilization phase.

Keywords: juniper, generative cycle, seed quality, ovule abortion, Juniperus

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