According to observations of naturalists and beekeepers.
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Tuliptree occurs in eastern North America. The species ranges from Vermont, west through southern Ontario and Michigan, south to Louisiana, and east to northern Florida.
This plant is present in at least 30 states/provinces in this country.
Tuliptree is a tall, deciduous, long-lived, broadleaf tree. The leaves are alternate with a distinctive tuliplike shape. In forest stands, tuliptree is one of the straightest and tallest trees, with approximately 66 percent of the bole free of lateral branches. It can reach heights of 200 feet (61 m) and a dbh greater than 10 feet (3 m). The flowers are tuliplike in size and shape. The fruit is a conelike structure consisting of many winged samaras on a central stalk.
Yellow poplar flowers from April to June; seeds mature from August to late October.
Brassica napus (aka: Rapeseed)
Allium schoenoprasum (aka: Chives)
Sinapis arvensis (aka: Charlock mustard, California rape, Charlock, Corn mustard, Canola, Kaber mustard, Rapeseed mustard)
Asclepias tuberosa (aka: Butterflyweed, Butterfly Milkweed, Orange Milkweed, Pleurisy Root, Chigger Flower, Canada root, Fluxroot, Indian paintbrush, Indian posy, Orange root, Orange Swallow-wort, Tuber root, Yellow milkweed, White-root, Windroot, Butterfly love)
Cirsium arvense (aka: Creeping Thistle, Canada thistle, Field thistle, California thistle, Lettuce from hell thistle, Corn thistle, Cursed thistle, Green thistle, Hard thistle, Perennial thistle, Prickly thistle, Small-flowered thistle, Way thistle, Stinger-needles)
Chamaenerion angustifolium (aka: Fireweed, Great willowherb, Rosebay willowherb, Saint Anthony's Laurel, French-willow)
Citrullus lanatus (aka: Watermelon)