Rocket or arugula ( Eruca sativa) is a native to the Mediterranean region, and a popular salad herb since Roman times.
It adds a sharp, piquant spice which enlivens other milder greens. It’s also a great option for autumn/winter sowing, germinating as low as 5°C and growing faster in cool weather.
The lush green foliage can rot if it is too dense and the fragile stems can fall over with overhead watering. They also bruise easily so harvest and wash them carefully.