Garden Dilemmas, Delights & Discoveries, Ask Mary Stone, New Jersey Garden blog

“Wild” Bachelor Buttons

a swath of purple wild bachelor buttons on side of the road

Hello fellow readers, Last week, Queen Anne created quite a buzz. This week we have the “wild” Bachelor to talk about; Bachelor Buttons (Centaurea cyanus), also known as cornflowers. They’re an old-fashioned flower that has beautified gardens for centuries, first in Europe just as Queen Anne’s Lace (Daucus carota.) They grow well in full sun and are easy keepers.

closeup of purple wild bachelor button flowersBachelor Button Folklore

In folklore, young men in love wore cornflowers. If the flower faded too quickly, it was a sign that the man’s love was not received by his intended.

Just like the reality show, there’s a new bachelor every year. Bachelor Buttons are an annual plant rather than a perennial, which comes back year after year. He self-seeds vigorously (figures) and grows 16 to 35 inches tall with grey-green branches. The flowers are about an inch and a half and intense blue. In the past, he often self-seeded in crop fields, hence the name cornflower. So is he a weed or wildflower? The same question we asked of Queen Anne’s Lace.

Bachelor Buttons – endangered or invasive?

In Europe, he’s now endangered by agricultural intensification, primarily due to the overuse of herbicide destroying his native habitat. Plantlife’s conservation organization named him one of 101 species to bring ‘back from the brink.’ On the other hand, through the introduction as an ornamental plant in gardens and a seed contaminant in crop seeds, Bachelor Buttons have naturalized in many parts of the world. He’s now found wild in every state except Alaska and is considered weedy or invasive by some authorities.

Bachelor Buttons attract beneficial insects. 

Rodale’s Organic Life published an article, ‘Flowers For Borders,’ that talks about controlling pests by planting the ’11 best flowers for borders’ that will draw beneficial insects into your garden. Guess what; the Bachelor was the first on their list to attract ladybugs, lacewings, ground beetles, and other insects that feed on pests. As a bonus, many beneficial bugs will also pollinate crops, thereby increasing yields. The article explains that Bachelor Buttons have extrafloral nectaries, which means their leaves release nectar even when the flowers are not in bloom – a plant ‘cologne’ of sorts.

womans feet in blue sneakers on side of the road with Queen Anne's Lace and wild Bachelor ButtonsQueen Anne's Lace and wild Bachelor Buttons on side of a farm road with a red barn in the background.So what about all the buzz of Queen Anne hooking up with the Bachelor? I’m sure you’ve seen them often commingling alongside the road. You wild thing!

Garden Dilemmas? askmarystone@gmail.com

Click through to the previous column on Queen Anne’s Lace Anomaly.

This story is featured in Episode 18 of the Garden Dilemmas Podcast:

Column updated 6/17/22

Mary Stone is a landscape designer, garden and nature columnist, and host of the Garden Dilemmas, Delights & Discoveries in the Garden of Life podcast. As owner of Stone Associates Landscape Design & Consulting, she enjoys helping others beautify their surroundings and discovering the life lessons nature offers along the way. Since 2012, her weekly column in THE PRESS has inspired a podcast and a growing community of readers and listeners who share a love of gardens, nature, and life's lessons. Through stories of growth, resilience, and belonging, Mary invites us to draw inspiration from Mother Nature and carry her wisdom into our own Garden of Life—stimulating growth, weeding undesirables, and embracing the unexpected. Thank you for visiting! Mary

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