May 29, 2025 Fourleaf Milkweed (Asxlepias quadrifolia) in bloom along the trails up here right now. This species of Milkweed is used as a food source by not only Monarchs but also Swallowtails, Fritillaries and some of the other nectar-feeding butterflies. There are 73 species of Milkweed native to the United States. Monarchs use about 30…