Garden quality wild rocket. It has a stronger (some would say better) flavour than the cultivated variety, with a smaller leaves and crunchy stalks. You can cut the leaves for salads and more will come again up to 2 or 3 times. The flowers are edible too and can be used to add a bit of colour to your salad.
Sow outside - March to September Protect autumn/winter crops with cloche or fleece