Dazzling Dragonflies

After a trip to China in 1982, Christine Cook opened her eyes to a whole new world of intrigue. She traveled thousands of miles from home only to discover the captivating creatures that also live no farther than her own backyard (figure B).

"I was surrounded by dancing golden dragonflies that filled the air, and I stopped and just took all of their energy in," she says. "They were fabulous--golden jewels flitting and flying in the air." She's been dazzled by dragonflies ever since.

A landscape designer by trade, Cook says that the voracious appetite of dragonflies makes them a great asset to the garden. "Because they're top predators in the insect world, they keep a balance with the insects in your yard. One of the insects that they love to eat is the mosquito." Mosquito-munching dragonflies are carnivorous and will eat just about any small insects. All that food gives them enough energy to fly at speeds of up to 30 mph.

Bees, flies, moths, butterflies and the occasional fellow dragonfly may be what's for dinner, but there are lots of predators that eat dragonflies, and that's especially true near water where these winged wonders spend a good portion of their lives. "As larvae, they can spend two months to several years living underwater. Then they emerge and become flying adults," says Cook. Dragonflies also return to the water to mate and oviposite (lay their eggs), and for that, a water source is necessary. It can be as basic as a barrel full of water or--as in Cook's case--as elaborate as her neighbor's pond. If you provide water, they will come to hunt, reproduce, perch, play and generally entertain anyone lucky enough to catch a glimpse of these fascinating characters in the garden.

Ponds can be a bevy of activity, and dragonflies love to watch the action--something that's easy for them to do since their eyes have 30,000 lenses with up to 360-degree vision. For this reason, Cook also plants some perching places.

"I've collected some sticks from the edge of the woodland," says Cook. "I like to look for sticks that have a very gentle curve to them." Any stick will do, just secure it into the emerging plants around the edge of the pond. Cook points them into the pond to give the creatures a great view.

These sticks are great dragonfly magnets. "Each dragonfly likes his own little particular spot," she says. "Sometimes the males become extremely territorial, and they'll pick one spot and guard it all day long."

You might want to pull up your own perch and watch the mesmerizing activities of these ancient insects. "They have great personalities. Over the years I've watched them and I've often thought that they're watching me."

If you want dragonflies gallivanting through your garden, get rid of any electric bug zappers, which kill dragonflies as easily as flies and mosquitoes. Over time, the dragonflies will do a great job of keeping the insect population in check without any help. After all, more than 90 percent of their diet consists of people-pestering mosquitoes!