The seeds are a popular sunflower seed substitute. It has important beef, dairy, maize, sorghum, wool and sunflower seed industries. The striated pattern of the sunflower seed hulls gives the material a speckled appearance. Mixed seed and black oil sunflower seed is favoured by many seed-eating species. Seed butters, such as sunflower seed butter are also used as peanut butter substitutes. Sunflower seed brittle is produced by embedding the kernels in hard sugar candy. Sunflower plants are harvested for the sunflower seed, sunflower oil and birdseed industries. He has had one solo exhibition at Johan Berggren Gallery&colon; "Sunflower Seed" (2016). The sunflower seed is the fruit of the sunflower ("Helianthus annuus").