Yes they bloom year round if in a green house or tropical area.
The hibiscus is a flowering plant that can bloom almost all year round in Louisiana. The camellia and knock out rose plants bloom most of the year with a month or two without blooms. Most plants have a dormant period when they do not produce blooms.
Whenever the weather is warm and conditions are right, Hibiscus will bloom. It can bloom year round in the right conditions. Some varieties need more heat than others.
Syringa villosa was created in 1804.
Syringa needs a cool or cold climate in which to grow.
The syringa is the state flower of Idaho.
This will vary according to locality. I find in a Mediterranean climate that ivy-leafed pelargoniums, alyssum, some daisies, and pansies flower throughout the year.
It is possible that the iris will bloom the year after transplanting but it is not a certainty.
What time of year do the Nantucket Daisies Bloom
they bloom once a year
You can get tulips at most florists year round as they have them shipped in from suppliers that grow them year round. However, as far as the season is concerned they usually bloom in the early spring as they tend to like cool weather.
In the NE usually in the spring and summer months when it is warm and flowers are in bloom. In the Western states some hummingbirds stay year round if there is enough food available. In places where they can't stay year round they migrate south where it is warmer.