Monarchs are currently migrating, albeit in small numbers, throughout the North Shore. The butterflies arrived several days ago and because of the rainy weather, they are in a holding pattern. When the sun reappears, look for Monarchs on any still-blooming garden favorites such as zinnias, as well as wildflowers. Please send an email or comment in the comment section if you see Monarchs in your garden or while outdoors over the weekend and upcoming week. Thank you!
Many species of asters and goldenrods have finished flowering; instead the Monarchs are fortifying for the long journey by drinking nectar at Black Mustard flowers, and even Dandelions.
Although not native to North America, Black Mustard (Brassica nigra) is beneficial to bees and butterflies for late season sustenance. Don’t you love its lemony golden beauty in the autumn sunlight?
Black Mustard is not the easiest nor most efficient plant for Monarchs to draw nectar from. I never see the butterflies on Black Mustard unless it is very late in the migration and there are few other choices available.
The ray flowers of asters provide a convenient landing pad for butterflies. Panicle-shaped flowering plant, such as goldenrods, also provide a convenient landing pad while supplying a smorgasbord of nectar rich florets. Black Mustard provides neither. You can see in several photos in an upcoming post that the Monarchs are nectaring with their legs gripped tightly around the base of the flower.
Black Mustard is an annual plant native to Eurasia and North Africa. Cultivated widely as a condiment, medicinally, and vegetable, it came to North America via the early colonists. The plant is in bloom from May through October, or until the first hard frost, and grows well in disturbed man-made sites.
Black Mustard is a member of the Brassicaceae, also classically called the Cruciferae (Latin, meaning ‘cross-bearing’) in reference to its four ‘crossed petals’, which is commonly known as the mustard family. Black Mustard is related to cabbage, broccoli, Brussel sprouts, kohlrabi, kale, turnips, and watercress.