Photo of common milkweed flower cluster

    Common Milkweed

    Asclepias syriaca
    Photo of whorled milkweed flowers.

    Milkweeds

    Subfamily Asclepiadoideae
    Photo of water milfoil plants along the shore of a pond

    Water Milfoils

    Myriophyllum spp.
    Photo of winged loosestrife plants and flowers

    Winged Loosestrife

    Lythrum alatum