Vasant ritu ( Spring ) is the second season of northern solstice (Uttarayana). It starts mid February ends in mid April. In uttarayana days are longer than night.
Also this season is of flowering of trees wherein trees grow new leaves and start to bloom. Along with this sun heat increases leading to melting of snow . Similarly warm weather melts the deposited kapha dosha*(http://www.ayurbeej.in/2016/02/kapha-dosha-tridosha-sidhhanta_10.htm) which had accumulated in winter season thus leading to aggravation of kapha dosha.
Also this season is of flowering of trees wherein trees grow new leaves and start to bloom. Along with this sun heat increases leading to melting of snow . Similarly warm weather melts the deposited kapha dosha*(http://www.ayurbeej.in/2016/02/kapha-dosha-tridosha-sidhhanta_10.htm) which had accumulated in winter season thus leading to aggravation of kapha dosha.
