Studies regarding cultivation potential for ornamental purposes of the spontaneous flora from Romania were made in different areas of the country. The present paper shows some species with ornamental value identified in the spontaneous flora of Buzau County, in the hilly and mountain area of the Slanic river valley. Identification and gathering of the species was effectuated in 2009 and 2010, during vegetation period (May-October). Were studied more species of plants but, from all of them, are presented only the ones with importance for landscape design, with the possibility of their usage in different landscape compositions: Agrostis capillaris L, Agrostis gigantea Roth., Alyssum murale Waldst. & Kit., Campanula bononiensis L., Dianthus superbus ssp. superbus L Dorycnium pentaphyllum ssp. herbaceum (Vill.) Bonnier et Layen, Luzula luzuloides (Lam) Dandy et Wilmott, Melica ciliata L., Orthilia secunda (L.) House, Pyrola rodtundifolia L., Phelum phleoides (L.) Karsten, Silene nutans ssp. nutans L., Trifolium alpestre L. Was used the botanical description and taxonomic nomenclature done by V. Ciocârlan and Flora Europaea. From all these taxons was gathered biologic material (seeds or whole plants) and with this were established the experimental fields for a study in crop conditions. Adoption of different multiplication methods and recommendations regarding usage modalities are based on biological particularities and ecologic demands imposed by the native area of these plants.