". . . certain it is that the mistletoe, the instrument of Balder's death, has been regularly gathered for the sake of its mystic qualities on Midsummer Eve in Scandinavia, Balder's home. The plant is found commonly growing on pear-trees, oaks, and other trees in thick damp woods throughout the more temperate parts of Sweden. Thus one of the two main incidents of Balder's myth is reproduced in the great midsummer festival of Scandinavia. But the other main incident of the myth, the burning of Balder's body on a pyre, has also its counterpart in the bonfires which still blaze, or blazed till lately, in Denmark, Norway and Sweden on Midsummer Eve. It does not appear, indeed, that any effigy is burned in these bonfires; but the burning of an effigy is a feature which might easily drop out after its meaning was forgotten. And the name of Balder's balefires (Balder's Balar), by which these midsummer fires were formely known in Sweden, puts their connexion with Balder beyond the reach of doubt, and makes it probable that in former times either a living representative or an effigy of Balder was annually burned in them. Midsummer was the season sacred to Balder, and the Swedish poet Tegner, in placing the burning of Balder at midsummer, may very well have followed an old tradition that the summer solstice was the time when the good god came to his untimely end.

Frazer, 1922:769.