These flashy little plants showed up in my bee yard completely out of nowhere. I’m sure nobody planted them but I have seen them growing in my neighbor’s yard a couple of houses down. A quick search shows it to be an invasive plant, but it’s also edible and has medicinal qualities.
The bitter, pungent leaves, which are high in vitamin C are great in salads as the plant is closely related to arugula. The flowers are aromatic, but only in the evenings. It is purported to induce sweating, promote urination and loosen a cough. When in flower, it is said to be a gland stimulant and aphrodisiac. It’s also a great nectar source!