removing black mold from canvas

We have a canvas cover over a yurt that has a lot of black mold on it. Does anyone know a good way to remove the mold from the canvas without harmful chemicals?

ive killed mold with a solution made with hot water, boric acid powder, vinegar it also works with hot water, boric acid powder, hydrogen peroxide.
about a gallon of water with a cup or more boric acid powder and a cup or more vinegar or peroxide
worked great for molded wood used in a building I put up, mold hasn't come back 12 years since first application.
I just mopped it on and let it dry.