The base of Gerrardanthus macrorhizus can reach the size of a car tire. You wouldn't guess it, but it is actually related to the cucumber family. This is why the leaves have a triangular shape. The flowers of Gerrardanthus macrorhizus aren't very striking with their greenish brown colour, but the seeds are. It's a fast vine forming plant which will also survive outside if it doesn't freeze too intensely.

Gerrardanthus macrorhizus is one of the most hardy plants you can get. It will survive temperatures between -2⁰C and 35⁰C. Still, it will flourish at a temperature around 25⁰C. This plant with its cucumber heritage can survive long periods of time in drought, but can use a bit of extra water in the summer, around once a week. The only danger here is if water can't drain from the pot, which can result in rotting of the root knot. The vine can be placed in direct sunlight, but the root knot should stay in the shade. It is possible to keep it outside. Place Gerrardanthus macrorhizus under a shelter to keep it out of the rain and bring it inside when it starts getting too cold. Fertilizing is possible, but not too much. As a substrate cactus soil will be suitable.