Plant goldenrods, asters, and milkweeds to provide Monarchs (and as you can see, many other pollinators) all the sustenance they will need during their breeding season and southward migration.

Wildflowers in order of appearance:

Seaside Goldenrod (Solidago sempervirens)

Smooth Aster (Symphyotrichum laeve)

New England Aster (Symphyotrichum novae-angliae)

Common Milkweed (Asclepias syriaca)