It isn't uncommon for variants of a song to come in both May and JUne variants. This is the case with The Banks of the Roses.
Version 5 in the Digital tradition starts

Oh, if ever I get married, it will be in June,
When the fields and the flowers are out in full bloom,
For 'twas there I spied my true love by the light of the moon,
All on the banks of the roses.
For 'twas there I spied my true love by the light of the moon,
All on the banks of the roses.

https://mudcat.org/@displaysong.cfm?SongID=5841