Why does a spring flower bloom?

Flower arrangement

The thin pink flower is a snapdragon. The flower based on brown is ヒペリカム. And the branch which lengthened straight is called an osier. The name of キンギョソ would come from the form of the flower like the love. In the place of origin, the Mediterranean Sea coast sandwiched between North Africa and the Southern Europe is it if I check it in Web. It seemed to be common to let a flower bloom with an annual plant of, autumn sowing in spring, by the way, would you bring him up in house cultivation?