Monkey nuts (Arachis hypogaea) are neat plants resembling clovers. They can grow to 3 metres high but much smaller in pots with pretty yellow male flowers. The novelty is the female flower that sends out an aerial “peg” that extends all the way down to the soil, buries into the soil and produces up to four peanut seed pods 5-15 cm deep at the tip of each “peg”. Fascinating if you have not grown them before.