The soils in the valleys of Striama and Toundzha have probably been formed with material from the Sredna Gora Mountains. The climate in the Rose Valley is transitional between moderately continental and transitional continental. The influence of the Black Sea is not felt because of the predominating western winds. The effect of the Aegean Sea is felt once in a couple of years from January to March. The length of the spring warming determines the buds formation and is significant for the crops.
Frosts are rare.
The rainfalls in the Rose Valley are heaviest in the spring, with a peak in June. Daily rainfalls are not abundant, yet the rainy days are many. This kind of weather prolongs the flowering period, suppresses oil evaporation, at the same time increasing the yield of oil and producing oil of good quality. A longer flowering period means a longer harvesting campaign at a lower daily output of flowering roses. Such conditions ensure good yield of oil.