My box from Blue Bird wax never grew any plants.
I have been using the soy based Blue Bird. I don't really give a shit about regularly waxing. The best performance is not a big deal for me. The wax has a nice aroma and I like that it is biodegradable. I scrape it with an old ski pass. After I scrape it I get a towel and rub my base for a smoother finish. It is much faster after a fresh wax.