Beechwood Monarch Observations 2026! If you have milkweeds, check them for monarch caterpillars! While adults can nectar on many different species of wildflower, their caterpillars only feed on leaves of milkweeed species. They hatch from an egg that is smaller than a sesame seed. In this photo, you can see the caterpillar almost ready to hatch! There are 5 stages, or instars, of caterpillar development that will occur over roughly a week and a half. The milkweeds are blooming right now, but adult butterflies will need lots of different native wildflowers to nectar from between now and September.
Audubon Society of Western Pennsylvania
614 Dorseyville Road
Pittsburgh, PA 15238
412-963-6100
e: info@aswp.org
A few spots are still open for this Saturday’s event with Butler Birders Club. Free native seed packets for all participants! To Register: https://bcpr.recdesk.com/Community/Program?category=64
© 2026 Audubon Society of Western Pennsylvania.
