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MeteoSwiss announced on Wednesday that temperatures from February to April this year were 0.8 degrees above the norm from 1991 to 2020. This allowed the spring vegetation to develop a little earlier.
However, hazelnut bushes may have already benefited from the “extremely mild temperatures” between December 20 and January 15. As a result, these plants would have bloomed in all parts of Switzerland by the beginning of January, 23 days earlier than the average for the period from 1991 to 2020.
Due to spring weather in February and above-average temperatures in March, coltsfoot and tree peony flowers appeared six to nine days earlier than this year’s average. Lack of snow and early snowfall would have led to early flowering of coltsfoot, especially in the mountains. Dandelion and meadowfoam were four to seven days ahead.
But the cool April slowed the blooming of the cherry trees. From the first week of April, they bloomed just two days earlier than the long-term average. The apple trees then bloomed in mid-April at exactly the same time as the average of the last three decades.
For this assessment, MeteoSwiss collected data from observers at approximately 160 stations in Switzerland. They observed the evolution of nature using 26 identified plant species.
(SDA)
Source : Blick
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