It wouldn't be unreasonable to say that trees connect earth and sky...
I found the green fabric (it's hand dyed that I purchased several years ago) while I was hunting around for something else this week and couldn't resist weaving it together with some blue that I had out sitting on the table. The brown with spots is fabric I dyed with eucalyptus. If I remember rightly the spots appeared when I wrapped the fabric around a piece of copper pipe.