Planning to grow sunflowers this year? Wait until after the last frost (usually around April or May), then find a sunny spot with rich, well-draining soil to plant the sunflower seeds in. Monitor them on a daily basis over a cup of tea in your Sunflower 1/2 Pint Mug. Or, if planning a sunflower competition this year, this hand-decorated floral mug will make the perfect prize for whoever manages to grow the tallest sunflower. Specifications Height: 9cm Width: 12cm Diameter: 8cm Capacity: 300ml Care Instructions Dishwasher safe. Liquid detergent recommended to maintain appearance. Not recommended for use in the microwave. Earthenware pottery can sometimes get hot in the microwave so it’s recommended that you don't put Emma Bridgewater pottery in the microwave. Not oven safe. Emma Bridgewater pottery is not oven safe unless marked as cookware.