Spring

Spring begins on the 21st of March and lasts until 20th of June in the northern hemisphere. The northern hemisphere begins to warm significantly causing new plant growth to "spring forth," giving the season its name.



The first day of spring is the beginning of the new year, Nowruz, in the Iranian calendar. Most flowering plants bloom this time of year, in a long succession sometimes beginning even when snow is still on the ground, and continuing into early summer.
source : Wikipedia