A peppery flavour herb, often used in salads, sandwiches, and as a garnish. Rocket, also known as arugula, is a leafy green herb with a peppery flavour, often used in salads, sandwiches, and as a garnish. Planting rocket can be beneficial as it grows quickly, provides nutrient-rich greens, and attracts beneficial insects while enhancing the flavour profile of your garden’s produce.