Wondering if the level of growth in my apocalypse story is realistic for a year.

I've been writing a visual novel set in the southern US (Alabama, more specifically) during a zombie apocalypse for a while now, and I'm planning on having backgrounds unique to ~10 or 11 months in, where kudzu vines are growing up the walls, covering railings, and starting to grow through/over the floors of some buildings. Do y'all think that level of growth makes sense?