After frost, plants and leaves wither. At this time, the stems and leaves on the ground should be cut off immediately, and the root should be dug out. If it is too troublesome, it can be put into the greenhouse together with a basin. Before harvest, pay attention to the selection of varieties, and select the best ceramics to ensure the purity of varieties.
Before storage, it is necessary to trim the withered stems and leaves, and cut off all the withered leaves 15cm away from the roots. In order to prevent the roots from being damaged, the whole pier should be dug out as much as possible. After digging out, first dry it in the sun for a few days. When the soil on the root is dry, shake off the soil and put it in a greenhouse with a temperature of no more than 5 ℃ to keep a constant temperature as much as possible.
The storage place shall be sterilized. When it is placed, the root neck is placed on the ground of the greenhouse upward. In order to prevent premature germination and heating of rotten roots, it is generally beneficial to pile up 3-5 layers and bury them with slightly wet sand.
During storage, it is necessary to check frequently and cut off useless roots in time. If it is found that the surrounding sand is too dry, do not water it directly. Take out the root tuber, spray the sand to the wet level, and then bury the root tuber.
Another method of storage is to divide the dried roots together with the adventitious buds growing in the neck. After segmentation, the cut shall be coated with grass and wood ash, which shall be installed in the wood trough or wooden box, and the gap shall be filled with sawdust or dry sand. Then put the wooden trough or box in the environment of 3 ~ 5 ℃. Do not move during storage. This method is convenient for storage, use, and storage area.
Some varieties of Dahlia root tubers are difficult to store, such as hibiscus, honeysuckle and so on. When storing the tubers of these varieties, do not mix them with other varieties. They can be dried at high temperature and placed in wooden boxes or flowerpots. A small amount of dry sand can be covered on the tubers for storage at 3-5 ℃. Or a few days before the frost, move into a greenhouse of 5-10 ℃, remove the flowers and flower buds, cultivate for about 15-20 days, make the nutrients fully concentrated in the tuber root, then remove the stem and leaves from the plant, and store in the original basin.
