How many days does it take from the beginning of plum blossom to the end of plum blossom?

It takes 20 days from the beginning of plum blossom to the end of plum blossom.

Meteorologically, the beginning and ending time of plum rain are called "entering plum" (or "standing plum") and "leaving plum" (or "breaking plum") respectively. In the middle and lower reaches of the Yangtze River in China, plum blossoms in mid-June and in early July every year, lasting for more than 20 days. But for each specific year, the beginning and end of plum rains and the intensity of plum rains are very different. The normal Meiyu in the middle and lower reaches of the Yangtze River began in mid-June and ended in mid-July, which coincided with the two solar terms of "ear planting and summer solstice". The meiyu period is about 20-30 days, and the rainfall is between 200-400 mm. Before and after "Little Summer", the main rainfall belt moves northward to the Yellow River and Huaihe River basins, and then to Shandong and North China. The Yangtze River basin began to change from rainy and humid weather to sunny and hot summer. According to statistics, this normal plum rain accounts for about half of the total.