Photo of whorled milkweed flowers.

    Milkweeds

    Subfamily Asclepiadoideae
    Photo of perennial or summer phlox flower cluster.

    Perennial Phlox

    Phlox paniculata
    Photo of purple milkweed flower cluster

    Purple Milkweed

    Asclepias purpurascens
    Photo of scarlet pimpernel flower and plant

    Scarlet Pimpernel (Poor Man’s Weatherglass)

    Anagallis arvensis (Lysamachia arvensis)