Some interesting sticks, about 2in diameter, straight, with bark on..
Mitred together and protruding out front
Will bring a 3d effect into play
Plus, with natural beauty of the wood will Enhance and border the greenery of the tree and bridge the gap between ourselves, the earth and the sky.
Thats a good idea, it could look really good without trapping in the natural ‘poppiness’ of the painting that I fear a frame might introduce. I’d use thinner sticks though, about garden cane thickness but more woody looking rather than bamboo.
Otherwise I’d hang it frameless so as not to trap the organic brightness within the barrier of a frame, just tidy up the sides of the canvas frame if nessesary with colours complimentary to the picture. A pale green or pale blue maybe. Simmilar to the light greens and blues in the main painting or maybe a bit of a gradient/pattern continuation of the picture.