Sugar water can become moldy in humid weather. Clean the feeder with hot soapy water every other day in this type of weather. This will help keep the nectar source fresh and appealing to your butterfly friends. These are only a few plant suggestions that will get you started on your way to butterfly gardening. Your local garden shop should be able to assist you with any questions and add to the menu that will delight and attract the butterflies in your area.
Butterflies are no exception.
They need a water source too and there are several ways you can provide this. A bird bath is a good way for a butterfly to drink. The only thing you will need to do is put some rocks in the bath, so the depth isn't daunting and the butterfly will have somewhere to perch while drinking. The other thing butterflies like are mud puddles. Some male butterflies actually congregate at the mud puddle in colorful clusters.