Berkana is the letter B
Anglo-Saxon Rune Poem (from ragweedforge.com)
The birch bears no fruit; yet without seed it brings forth suckers,
for it is generated from its leaves.Splendid are its branches and gloriously adornedits lofty crown which reaches to the skies.
Berkana’s name means Birch. In the Anglo-Saxon rune poem however, the tree described is actually the poplar. Interestingly enough, the poplar tree produces small buds which are known as Balm of Gilead buds, which are recommended for use in healing external skin issues, like sunburn. The buds also figure in magical usage as an herb of love, particularly in soothing and reuniting lovers who have been estranged by conflict or misunderstanding.
Berkana meaning is one of growth, nurturing and feminine energy. Many authors comment on the shape of the letter reminding them of full breasts, particular of a pregnant or breast-feeding mother. In a reading, it can indicate that a gentle and nurturing action is taken. It can also indicate that the situation is progressing gently. This figures especially well for questions about health, healing, childbirth or issues where sudden growth and increase might de-stabilize the situation.