By cutting willow branches and planting them, you can form them into living structures.
21 DIY Greenhouses with Great Tutorials: Ultimate collection of THE BEST tutorials on how to build amazing DIY greenhouses, hoop tunnels and cold frames! Lots of inspirations to get you started! - A Piece of Rainbow
love this trellis idea
I don't know when I will ever have enough rocks to make a wall, but it would certainly be doable to do a spiral in he space between pavers as in one of the pictures. I could use rocks from the landscaping around the house.
woven willow bird hide (willow sculpture) and concrete circular slabs as a path over a pond surrounded by Chamaemelum nobile (chamomile lawn), Eryngium giganteum, Eremurus himalaicus