May Flowers is interdasting.
"The proverb "March winds and April showers bring forth May flowers", first recorded in 1886,[2] and the shorter, trochaic version "April showers bring May flowers" (originally "Sweet April showers/Do spring May flowers", part of a poem recorded in 1610[3]) are common expressions in English speaking countries. The phrase is referenced in the General Prologue of The Canterbury Tales: "Whan that Aprill, with his shoures soote The droghte of March hath perced to the roote".[4]"
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Wikipedia
https://en.wikipedia.org/wiki/April_shower
Refers to this:
"The frame story of the poem, as set out in the 858 lines of Middle English which make up the General Prologue, is of a religious pilgrimage. The narrator, Geoffrey Chaucer, is in The Tabard Inn in Southwark, where he meets a group of "sundry folk" who are all on the way to Canterbury, the site of the shrine of Saint Thomas Becket, a martyr reputed to have the power of healing the sinful."
https://en.wikipedia.org/wiki/General_Prologue