Generally saffron grows in areas where posses temperate climate with relatively mild winters and hot summers. A Sandy and clay soil farm is required in addition to the previously fallow season. The best fertilizer for saffron is animal manure and infield should be flat and smooth.
From late June to early September is the best time to plant saffron, which for every hectare of land under cultivation, between 3 and 10 tons of saffron bulbs (depending on cultivation) is required.
Saffron should be watering in the form of flood irrigation and watering a field of saffron for the first time is in October. After drying off with precautions not to damage the onions, the land should be tilled in surface.
After drying off the land, by considering precautions not to harm the crocus, they till the ground level up.
After a surface plow, the soil which has covered crocus becomes soft and saffron grows easily.
In fact, by doing the above mentioned plow the first leaves and the stems of the flowers come out, because the soil compaction is low.
The second step after harvest is the watering of flowers and watering is needed 2 to 3 times to the beginning of spring and once or twice the beginning of spring.
By the second month of spring due to the warm weather, yellow plant’s needles leaves become yellow, and sometimes it is used to feed livestock.
Saffron harvesting begins 10 to 15 days after the first irrigation and the opening of the first flowers.
The important thing is that flowers should be picked up before the rising of the sun and the radiation.
Failure to comply with this and any delay in picking flowers, causes flower quality diminishes.
Perhaps one of the most important reasons of the superior quality of Iranian saffron in comparison to other saffron crocus in the world is timely harvest of saffron in Iran.
Picked flowers should be quickly available to those who separate the triple stigma.
What separates from the mud, after drying, finally is saffron, ready for those whose mission is to pack it according to all aspects and principles ultimately provide the marketplace.
The calculations show that an average of 10 kg of saffron is obtained per hectare in terms of balance.