I love this effect Meg. The effect on the trees reminds me of when the bead on a watercolour painting has bled. It looks like lichen too. I'm guessing this is digital with elements of watercolour texture layed over it?
Daniel, Thank you! This is entirely, digital, yes. I used Adobe Photoshop CS5 and I'm pretty sure that the texture I used is actually a preset. I just used it with a circle brush with pressure sensitivity! The scale was enlarged quite a bit to get this effect :) So yeah, no texture over the image, just a texture built into the brush I used.