Saffron grows in areas with a Mediterranean and continental climate. The history of its development shows that the plant adapts very well and at extreme temperatures – up to 40 degrees in summer and in winter up to -20 degrees. It is due to the fact that in winter the bulbs are in hibernation. The dry and hot summer is favorable for the saffron. It develops well when the annual rainfall is in the range of 250 – 600 mm. Grows well in sunny areas, but if the summer is very dry, a watering can be done to stimulate growth and richer harvest.
If there is rain just before flowering, the yield will increase. If irrigation of saffron is necessary, it may be gravitational, sprinkling or made by drip irrigation. The best results are given by sprinkling. However, too many rainfall and very low temperatures during flowering are contraindicated, and this should be taken into account during the planting period.