posted 11 years ago
I've used sticks and branches and coarse stalks of all sorts, the branchier and pricklier the better, laid down atop the other mulch around the trees. Even things like dead eggplant and pepper plants. Many situations have a surplus of stuff like this, with only a few uses (such as huge beds and fuel) without going to the energy use and infrastructure to chip or shred them. The one thing to beware of is, particularly in winter in severe climates with snow, is that these mini brush piles can provide cover for rodents which will likely chew on the tender bark of the trees. Little scraps of fencing, wire, coathangers, and such like will also work, though won't look as "natural".