The mustard greens were sown on 10th September last year and were not protected from the birds, slugs or weather. They didn't do much and I was prepared for failure (as with the Little Gem lettuce in the adjoining bed which sadly deteriorated being caged from the birds and protected with fleece from time to time). But these held on looking green and small. Then they put on a spurt from March to April. With the first signs of forming flower heads I harvested them in two batches and we ate them as Chinese geens. The mustard flavour was not overpowering (by my reckoning) and the greens tasted geat raw too. One consideration in their abrupt harvesting was that they now towered over the new spring salads in the bed which will soon provide delicate thinnings - or as a marketing agent would call them, microgreens.