Folks are planting milkweed for the monarchs.

The milkweed (genus Asclepias) is the host plant (larval food) for the monarch butterfly (Danaus plexippus). No wonder the monarch is sometimes called "the milkweed butterfly."

The perennial plant is so named for its milky juice, consisting of a latex containing alkaloids and other complex compounds. Carl Linnaeus named the genus for the Greek god of healing, Asciepius.

But milkweed is also a favorite bee plant. It's an important nectar source.

The UC Davis Arboretum has a beautiful milkweed patch near Mrak Hall and on any given day, you'll see honey bees foraging. Be prepared to see as many as four or five honey bees on one bloom. The fragrance is delightful and so are the bees!