I am a monarch mama. If you’ve never raised a monarch butterfly from an egg to a full grown, beautiful butterfly, you really should try it. It is really quite simple. You just need milkweed plants, a large jar, a rubber band and some cheesecloth or screening for the top of the jar. Butterflies love milkweed and deposit their eggs on the leaves of the plant, often on the underside. The eggs are a very pale yellow, almost butter colored, and they are perfectly round. If you find one on a leaf,