We have almost no evidence about what the Norse actually did for Summer Finding as a religious festival. However, one can presume that the return of growing things, planting, fertility, Freya (Goddess of love, sex, and women's magick), and perhaps Sunna the sun Goddess may have been involved. Though planting may have been delayed (if done at all) in the far northern provinces of Scandinavia. Landwights (or spirits of the land) may have also been honored at this time.
JYD #13!!! "Nobody knocks off an old man in my neighborhood and gets away with it." - The Burbs