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An assessment of the growth of one-year-old seedlings from six selected Robinia pseudoacacia L. clones on the territory of the nursery “Lokorsko” of State Forest Enterprise Sofia was made. The results show differences in quantitative parameters of growth of black locust seedlings in two variants of experiment – seed rows and containers. This suggest a correlation between the seed provenance and the growth of seedlings, which are probably genetically justified. Clones Appalachia, Jaszkiseri и Riyhovo-7 are most suitable for production of black locust seedlings based on their quantitative parameters with good seed germination and established sowing rates.