What type of flora do butterflies eat and why?

Actually, butterflies do not eat at all. Well, at least not in the traditional sense. Instead of eating, butterflies get their nurishment from drinking. They have a long narrow tube in their mouth called a proboscis that acts as a straw. They usually set on top of a flower and drink the nectar. Butterflies can taste with their feet. They have six lets and they each have sensors on them that can tell just by landing on a flower what it taste like. They eat anything that can dissolve in water, They mostly feed on nectar from flowers but also eat tree sap, dung, pollen, or rotting fruit. They are attracted to sodium found in salt and sweat. This is why they sometimes even land on people in Butterfly Parks. Sodium as well as many other minerals is vital for the butterflies reproduction.