The road on fire
Thick vines that hang from the places where storms float through hedge gates and in the pockets of the thorns where they never leave. They dangle for as high as anyone can see. Used in construction for tokens and Hollows. Also harvested for the gel inside that acts as a powerful analgesic.
They are dangerous because randomly Stormvines carry a powerful electrical charge that is undetectable for all but the savviest experts.