Suddenly overnight, they are in flower. They thrive on poor soil. Some of the leaves have been munched slightly. These are on the front of our house, but when they grow in the garden you can eat the leaves, seed pods and flowers. They are nice to eat as a garnish in salads.
Nasturtiums come in a variety of colours and with plain or variegated leaves. As long as they get some water occasionally they will grow and scramble up surrounding plants or up walls, but they are not frost hardy and will die back when the weather turns cold.