First Monarch Butterfly Sighting! (April 27, 2026)

These pictures posted above are old pictures from my garden when I grew Swamp Milkweed. They are a host plant for the Monarch Butterfly.

At my school there are several common milkweed plants by the school entrances closest to the staff parking lot. The common milkweed (Asclepias syriaca) looks different than Swamp Milkweed (Aslepias incarnata). Both are host plants for the Monarch butterfly. Today as I was leaving school for the day I was surprised to see a Monarch butterfly on one of these common milkweed plants. It seemed odd to me especially since just the other day I posted about Monarch Pass. I cannot remember seeing Monarch butterflies in Virginia this early in the season. In my home garden I don’t normally begin to see them until the middle of summer. I pulled out my cell phone to take a picture but I could not get one before it flew away.

Today I wondered if Monarch butterflies are seen around Monarch Pass, Colorado. I also wondered how high the monarchs can fly. I read that they can be seen around the Monarch Pass area from early May through October, though this is not how this location got its name. As to how high they can fly, I read they “typically migrate at altitudes of 800 to 1,200 feet.” They are capable of soaring much highter. I don’t know how accurate this is.