1, water immersion method: take the method of water immersion, toon bundled up and cut off the root, the root immersed in water for 1 day can be taken to put the preservation box to save can be. 2, refrigerated method: the surface of the toon to get dry water, sealed with plastic wrap can be put in the refrigerator. 3, freezing method: will be washed clean, blanched toon to become green, and then over the cool water to control the dryness of the sealing put the refrigerator freezing layer.

Toon varieties are many, according to the toon buds and cotyledons of different colors, basically can be divided into purple toon and green toon two categories. The purple toon has black oil toon, red oil toon, Jiaozuo red toon, Ximou purple toon and other varieties. The green toon has green oil toon, yellow umbrella and other varieties. Toon varieties are different, their characteristics and features are also different. Purple toon is generally more open crown, gray-brown bark, buds purple-brown, the first young shoots purple-red, glossy, strong flavor, less fiber, containing more oil; green toon, crown upright, bark green or green-brown, slightly lighter flavor, containing less oil.