Relief for Weary Monarch Butterflies

Monarch butterfly populations are in danger, but there are a few simple steps you can take to help them thrive.

  • Monarch Caterpillars
    You can help monarch butterfly populations thrive by planting milkweed, the only plant the caterpillars can eat, in your back yard.
    Photo courtesy DAVID CAVAGNARO
  • Monarch Butterfly
    Meadow Blazing Star (Liatris ligulistylis) is an excellent source of nectar for adult monarch butterflies. And this hardy perennial is easy to grow almost anywhere in North America.
    Photo courtesy DAVID CAVAGNARO

  • Monarch Caterpillars
  • Monarch Butterfly

Many butterflies are beautiful, but the unique 1,500-mile migratory patterns of dazzling orange and black monarch butterflies make them one of the most well-known. Each spring, millions of adult monarchs leave the remote 60-square-mile patch of fir forest in central Mexico where they spend the winter, and race northward to lay their eggs. A smaller population overwinters in Southern California and flies north to Oregon and Montana. But with North America’s rural land being developed at the rate of 6,000 acres per day, both groups of monarchs face an increasing shortage of suitable plants upon which the caterpillars and adults can feed.

To offset this habitat loss, hundreds of gardeners, schools and even a South Dakota funeral home have set aside special patches of land in an effort to create Monarch Waystations — places where monarchs can reproduce in spring and summer, and stop for much-needed nectar breaks as they fly south in fall. Launched in May 2005, the Waystation program is sponsored by Monarch Watch, a nonprofit alliance of scientists, students and citizens based at the University of Kansas.

“People want to do something beneficial with their property,” says insect ecologist and program director Orley Taylor. Currently, more than 1,000 sites in 43 states and provinces are certified Monarch Waystations.

The minimum size for a certified Waystation is 135 square feet, in any shape — including clustered around a fence row. In addition to at least two species of milkweed (the only host plant monarch larvae eat), a Waystation should include four or more nectar-producing flowers that bloom at different times, such as purple coneflower, goldenrod and floss flower.

Common milkweed ( Asclepias syriacus ) can be invasive, but you won’t have this problem with swamp milkweed ( A. incarnata ) or bright orange butterfly weed ( A. tuberosa ). Swamp milkweed is available in colors ranging from deep pink to white, and monarchs often prefer it over other species. You can buy a seed and information kit for $16 from Monarch Watch, or purchase plants from a native plant nursery. Click here for a list of mail-order nurseries that sell two or more species of well-behaved milkweeds as well as other good nectar plants, organized by state.

Monarch Waystations are most needed in large cities, Taylor says. Noting that many city gardening groups are planting rain gardens to help solve runoff and water pollution problems, Taylor sees an opportunity to help monarchs at the same time. “As long as people are putting in rain gardens, they can slip a few milkweeds in.” Taylor is also working with highway departments to encourage roadside planting of milkweed and nectar plants.

2/20/2015 3:17:40 PM

Anybody have any advice about how to grow a milkweed station if you own animals? For example, goats, chickens, cats. Is it just necessary to plant far away from where animals feed or are the risks of contamination and poisoning too high? Suggestions for quality, reliable articles and further reading welcome. Thanks!

2/19/2015 11:51:05 AM

Just be sure you plant the right species of milkweed, otherwise you will damage and kill the butterflies:

Joyce Whittington
5/25/2012 2:23:01 AM

I have a half dozen of these caterpillars in my herb garden. They have just about stripped the dill plant of all foliage and appeared this morning to be eating the thicker stems of the dill. Is dill in the family of milkweed? The caterpillars are beautiful and have really fattened up on my dill.



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