The height of sunflower is generally 1-3.5m, while the height of sunflower is only 10-30cm, so they can be easily distinguished according to the plant height.
The flower disk of sunflower is relatively large, and the area that seed disk can occupy is more than 1 /3 of the whole flower disk. Its color is less, only yellow. But the disk of sunflower is smaller, and the proportion of seed disk occupying the disk area is smaller. In addition, its color is more, in addition to everyone has seen yellow, there are purple, red and other unusual varieties
Sunflower seeds are very large and can be eaten directly. And the seed of sunflower is very small, and can't be eaten directly.
