Also, keep containers clean. Remove excessive frass or manure. A white variety of the Monarch butterfly has been reported throughout the world. It is grayish white in all parts of the wing normally orange. Some people think the white form results from its inability to synthesize the normal orange pigment, but this has not been adequately researched.
All insects change form as they mature.
This is called metamorphosis. During winter months adult Monarch butterflies from all over North America roost in trees, at over-wintering sites in California and Mexico. Millions of Monarchs live in these compact mountainous sites. A small amount over-winter along the Golf coast and south Atlantic coast. These adults live on moisture and flower nectar.