I am huge fan of Foliage brushes for photoshop and one of my favourite places to go hunting for some cool photoshop brushes is here on deviantart.com. Here are my top 5 foliage brushes. Click on the images to go to the actual site of the generous artist to download them.
by Scarlett1313
by Unrestricted-Stock
by GraphicIdentity
by spiritsighs-stock
by gabymar
