|Green Man Tree Oracle|
So I am entirely dependent on the companion book for ideas. John Matthews writes in the companion book to Green Man Tree Oracle that the Alder card represents defending your territory or keeping the way clear before you.
I found a lovely page about the alder tree at
Goddess Tree: Alder. It provides lore about alder trees gathered from several sources, with citations.
All the sources agree that the alder tree has something to do with battle and defense. So, that would have to be my interpretation, though I have to say the sleepy, sorrowful looking green man in this card doesn't make me think of battle and defense. I notice a standing stone next to the tree on which is carved a raven, which is associated with the alder, apparently.
In a drawing, I suppose I would say this card suggests keeping defenses up, setting clear boundaries, but if I hadn't done this bit of research first, I would have been at a loss, as I have no personal associations with this tree.
While I've found it interesting to look into the tree lore and I think the cards are lovely, this deck is probably never going to be one I turn to regularly. I'm glad I've got it, though.