Question

How long after a butterfly hatches does it need to eat?

Answer 1

After about two hours, the butterfly's wings have dropped completely and are fully formed, ready for first flight.If you are making nectar for newly hatched butterflies from a kit or those you've received through the mail, you'll need some table sugar and water

Answer 2

the eggs hatch after three days . caterpillar emerge from the eggs and eat for 10 -12 days before forming chrysalids