The days known as Les Saints de Glace, named in honour of St Mamert, St Pancrace, and St Servais, are on respectively May 10th, 11th, and 12th. I am told to expect a cold snap.
There are scientific explanations for this late frost. Astrologists note that the earth’s orbit takes it through a cosmic dust cloud which is supposed to reduce the sun’s warming rays and cool the planet. Meteorologists claim that this explanation is flawed because the cold spell is locally felt, whereas the astronomical dust cloud would cool the whole planet. They believe it has more to do with gulf streams and the change from winter to spring.
Woe betides any foolish gardener who plants before these dates.