You don't want to do it too early, or the critters (mice, voles, etc.) will use your mulched plant as a winter hangout, and some of them love to eat bamboo rhizomes. Nuda can handle low temps, so I'd probably wait until the lows get below freezing consistently before I'd consider winterizing.

If I remember correctly, Michigan Bamboo Co. has some winterizing tips and videos on their site.

Looking at the weather map, it looks like it is about time for you to over-winter it.

If you get tons of lake effect snow like me, don't even bother with winterization because the snow will be enough of a blanket to insulate a small plant especially something hardy like Nuda. Just shovel more on if there are still leaves exposed during extreme cold.

This is only around 3-4 inches of wet snow and hardly any green is left exposed after the snowstorm. They are usually completely covered by snow on the coldest months.

Here is a link that might be useful: {{gwi:412318}}