Vergers translates to "orchards". While not an extremely rare word, it's less common in everyday conversation and song lyrics than words like "fleurs" (flowers) or "cœur" (heart).
In the context of "Pour Ma Mère," the word "vergers" is used to create a beautiful, pastoral image. The singer claims to have "plus de fleurs... en mon cœur / Que dans tous les vergers" (more flowers... in my heart / Than in all the orchards). This poetic comparison elevates the love for his mother beyond the abundance of nature, making it a memorable and evocative choice.
Grégoire's "Pour Ma Mère" is such a sweet song, and it's all about a son's immense love for his mother. He uses these beautiful, almost overflowing images to describe just how much she means to him.
He sings, "Il y a plus de fleurs Pour ma mère, en mon cœur Que dans tous les vergers" (There are more flowers for my mother, in my heart, than in all the orchards). It's like his heart is a giant garden, just for her! And it's not just flowers; he also says, "Plus de merles rieurs Pour ma mère, en mon cœur Que dans le monde entier" (More laughing blackbirds for my mother, in my heart, than in the whole world). He even adds that there are "bien plus de baisers Pour ma mère, en mon cœur Qu'on en pourrait donner" (many more kisses for my mother, in my heart, than one could ever give). It really shows that his love is boundless and truly comes from the heart.