Fans of fancy soaps, beware. The internet is awash with reports that seeds from luxury soap brand Lush's Wiccy Magic Muscles massage bar have been dropping down plug holes and sprouting as plants.

Made with aduki beans, which are often used in Asian cooking, the bar is intended as a massaging product and according to Lush's website, are best kept in the fridge in warm weather.

But people using them as a showering soap have discovered the beans loosen and fall from the bar. Germinating in residual drain water, they then grow into plants.

If you're after a massage product, or a shower garden, the bar is available in New Zealand for $18.50.