The roses bought by the flower shop are all buds. According to the laws of nature, they have to absorb nutrients from the rose tree for another week before they can bloom. But after we take it off, it can't absorb nutrients. It can only absorb a small amount of water from the facade of the vase to maintain the bud state, so it can't bloom.

Rose is a shallow-rooted plant with strong germination ability, sunshine-loving, cold and drought tolerance and strong adaptability. However, in cool and poorly ventilated places, poor growth and scarce flowers lead to vain growth. Roses do not choose soil, but they grow best in deep fertile neutral or slightly acidic light loam with good drainage, and slightly alkaline soil can also grow.

Roses are afraid of waterlogging. If they are waterlogged for a long time, the leaves at the lower part of the branches will turn yellow easily. Severe waterlogging will kill the whole plant, so don't plant roses too close to the wall to avoid sunburn caused by sunlight reflection.

Rose is a temperate tree species, which is cold-resistant and drought-tolerant, and has no strict requirements on soil. It can grow in weak alkaline soil. It grows and blooms best in neutral or slightly acidic light loam rich in humus and well drained, and likes light best. Poor growth in the shade, few flowers, no tolerance to water accumulation. When it is flooded, the leaves under it will turn yellow and it will sprout quickly.

References:

Baidu encyclopedia-rose