The effect of potting media on growth of 3 Ficus benjamina cultivars: Exotica, Natasja and Golden King, as well as on pH, total soluble salts and mineral element contents in 3 layers of potting media at the end of cultivation on ebb- and-flow benches was investigated. The experiments were conducted in summer and winter seasons. Two potting media were compared: peat and peat+rockwool Grodan BU 20 (2:1, v/v). All tested cultivars grew better in summer time. ’Exotica’ grown in peat+rockwool performed better than at growing in peat. Peat was better for ’Golden King’. The growth of ’Natasja’ was unaffected by potting media. At the end of cultivation the highest pH was found in bottom layers of potting media, the lowest in top layers. The highest total soluble salt levels were measured in the upper layers. In summer season the upper layers accumulated more K, while in winter more N-NO⁻₃, K and Ca. After the culture termination the peat+rockwool medium accumulated more mineral components than the peat.