If you have a gardening friend who calls late-blooming asters 'weeds' just point out a few species that were depending on them for sustenance on October 12, 2011, at World Peace Wetland Prairie in Fayetteville, Arkansas

Checkered white Pontia protodice

Monarch butterfly on late-blooming asters

Please identify this caterpillar

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Buckeye butterfly on late-blooming asters

Buckeye butterfly on late-blooming asters

Junonia coenia (Buckeye) on late-blooming asters

Pontia protodice White-checkered butterfly