Do rotadendrums bloom adjectives season or only contained by the spring ?
Answers: I assume that the plant to which you refer is the Rhododendron. As a general rule, these plants bloom lone in the spring, although here are a number which have the disconcerting and predictable mannerism of re-blooming in the autumn. It is worth your while to progress out and dead-head (snap off spent flower heads) after the blooming length, which improves the plant's appearance and directs strength into next year's buds.
Rhododendrons flower mostly contained by the spring, but some early variety bloom end of winter, and some as slowly as early summer. With sensible planting, you can have them flowering from winter through to precipitate summer. There are tropical Rhododendrons called Vireya that bloom here within the warmer weather, but firm to grow in cold weather