Some butterflies can even digest pollen, which provides needed proteins. Fortunately, butterflies are only somewhat, picky-eaters when it comes to the flowers they choose as nectar sources. A flower that is desired by one kind of butterfly is likely to be desired by other kinds as well. However, people and butterflies don t always agree on what makes a great flower. For example, lots of people like roses.
Roses are very beautiful and have an extremely pleasant fragrance.
Most butterflies, however, feel differently. In fact, to this day, I have never observed a butterfly nectaring on a rose. A lot of butterfly gardeners, especially beginners, start out by growing flowers that the butterflies use as nectar sources and that humans find attractive. This is a good way for beginners to attract butterflies. Even if no butterflies ever visit those plants, the gardener will have some lovely flowers to show for the effort.