1, put the roses in a water bottle, in the water bottle with scissors to cut the branches into a slant, increase the water absorption area, fully absorb water, note that it must be pruned in the water, otherwise contact with the air, the branches absorb water is not enough, and secondly, to keep the water sufficient, spraying water to increase humidity. The longest can probably keep about ten days. 2, put the end of the flower branch on the stove fire burnt, and the water in the water bottle, slightly add some sugar. The flowers in the water bottle can be kept for at least half a month or more, or even a month or two.