Lettuce ‘Double Oak’ is a vibrant blend of green ‘Pleasance’ and deep purple ‘Oakus’, offering a striking colour contrast in both the garden and on the plate. With a mild flavour and attractive, oak-leaf foliage, this duo creates an ideal summer salad mix. Both varieties boast strong resistance to downy mildew, making them a reliable, easy-to-grow choice throughout the warmer summer months. Ultimate height and spread: 25cm (10in).