In which month does spring end?

According to Baidu Encyclopedia, as far as solar terms are concerned, spring in China starts from the beginning of spring (February 2-5) and ends in the long summer (May 5-7), so spring is from February to May.

Spring is one of the four seasons, between beginning of spring and Long Summer, including solar terms such as beginning of spring, rain, fright, vernal equinox, Qingming and Grain Rain. Spring represents warmth and growth. In spring, the qi of yin and yang begins to change, and everything germinates and grows with the rise of yang.