5. Common milkweed (Asclepias syriaca) Milkweed is the only plant where the endangered Monarch butterfly lays its eggs, as it's eaten exclusively by its caterpillars. So it's one of the best ...
Pictured here is a blue fly pollinating common milkweed (Asclepias syriaca). UNIVERSITY PARK ... “Bees and flies are essential for pollinating plants, both in the wild and in agriculture ...