Graffiti Cauliflower is one of the most visually appealing varieties you can grow in a vegetable garden. The bright purple heads are guaranteed to satisfy on a raw vegetable platter or roasted. The heads maintain their color while cooking, although they do turn to a darker, bluish-purple once cooked. Graffiti Cauliflower has traditionally large plants and produces medium to large-size heads. Because the heads are darker, they require less wrapping than white cauliflower varieties. This means the harvest window is more flexible. Heads are densely-packed and well-domed.