How to stop the buzz killer

Many of the things we do in our back yards can harm or kill the bees that help pollinate our garden plants.

May 25, 2010 at 9:48PM
A bee lands on a daisy fleabane
A bee lands on a daisy fleabane (Associated Press/The Minnesota Star Tribune)

Most of us know that bees are suffering. Mites, viruses, loss of habitat and use of insecticides have significantly reduced the number of honeybees and native bees. But as gardeners, it's in our best interests to help bees survive and thrive. Some kind of bee pollinates almost everything in our vegetable gardens, all of our native flowers and some cultivated perennials.

But what we don't know about bees can sting us.

Bees look and act different from wasps. Wasps are smooth, whereas bees are fuzzy. While wasps can be aggressive, bees rarely are. They can sting, but they only do so when they feel threatened. And, unlike wasps, bees aren't interested in our picnic food or our soft drinks. In fact, they're not particularly interested in humans. What they are interested in is finding flowers with nectar and pollen, finding nesting sites and living without pesticides.

And that's where we can help.

Plant flowers

Bees are attracted to colorful flowers, but what keeps them coming back is pollen and nectar. If they find neither one in a flower, no matter how colorful, they'll move on to another plant.

Natural bee magnets include flowers such as asters, bee balm, butterfly weed, catnip, clover, common milkweed, cosmos, goldenrod, purple coneflower, sedum, sunflower and yarrow. They're also attracted to herbs, such as mint, oregano, chives, rosemary, thyme and sage, and the flowers on blueberry bushes as well as redbud, apple and cherry trees.

But bees aren't as picky as most gardeners: They also are attracted to weeds. So if you're behind in your weeding, you can always say you're leaving the dandelions and creeping Charlie in place for the bees.

Create a diverse habitat

Having plants that bees love is just a start. If you really want to help the bees, you need to offer a wide diversity of plants. And having plants that flower from early spring until well into the fall is a plus, too.

You also can create a bee-friendly habitat by letting a part of your yard go, said Marla Spivak, an entomology professor at the University of Minnesota. "Bees need a muddy, messy, weedy space," she said. "Most people till and weed, but bees need undisturbed sites."

Across the country, bees are losing habitat to commercial development, single-crop farm fields and perfectly manicured lawns. "They're in decline in part because we're way too tidy," said Spivak.

Avoid using insecticides

Many of the insecticides we use to control ants, sawflies, borers and other garden pests can kill bees.

"Bees are sweeping in and picking up everything we apply," said Spivak, "and everything we apply is potentially harmful."

Consider leaving small infestations of bugs alone or hand picking them. If you do apply an insecticide, opt for a granular form that is taken up by the plant rather than sprayed in the air. If you must spray, time the application for early morning or evening, when bees are less active, and never spray insecticides on plants in flower.

Bees are good for our gardens. Instead of threatening them, we can create havens where they can thrive and do their work of pollinating our plants.

Mary Hockenberry Meyer is a professor and Extension Horticulturist with the University of Minnesota.

The Akron Beacon Journal contributed to this report.

about the writer

about the writer

MARY HOCKENBERRY MEYER, Contributing Writer

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