E.C.(electrical conductivity) levels of nutritive solutions higher than 3.0 mS/cm have a detrimental effect on the plant growth of Ruscus (Danae racemosa), as measured by fresh weight, number of aerial branches. The E.C. of the nutritive solution affected the biometric characters of the phylloclades. When higher than 3.0 mS/cm, it induced a reduction of phylloclade length, breadth and area. The length/maximum breadth ratio particularly increased with increasing E.C. of the nutrient solution from 2.0 up to 5.0 mS/cm. The changes affected the phylloclade ('leaf') morphology determining a lanceolate shape. Such modifications in high salinity substrate conditions were displayed by the upper phylloclades of the aerial branches. No injury symptoms (chlorosis, burn, necrosis etc.) were detected; nevertheless the changes in phylloclade shape affect the commercial quality of Danae racemosa, a cut foliage crop widely grown in Italy and important from an economic point of view. Plants of Ruscus (Danae racemosa) were grown in pots containing sand under 70% shading. They were fed every 4-7 days for 16 months with volumes of nutrient solutions sufficient to wash the substrate and to maintain fixed E.C. values Different E.C. levels (2.0 - 3.0 - 4.0 - 5.0 mS/cm) with constant N:P:K:Ca:Mg ratio were determined in the nutritive solutions. C. Dalla Guda, E. Scordo, C. Allera, S. Castello, F. Di Battista, E. Farina. ISHS Acta Horticulturae 609: International Symposium on Managing Greenhouse Crops in Saline Environment www.actahort.org