Welcoming Butterflies

742-butterfly-on-lavenderLast week I talked about the European Paper Wasp, a new threat to our urban butterflies. Besides judicial control of the wasps, one thing we as gardeners can do is provide plenty of habitat for these beautiful insects.

Creating a yard that welcomes butterflies isn’t difficult, and it will appeal to people just as much as it does to the butterflies.

First and foremost, don’t spray insecticides in your yard. You’re trying to help butterflies and caterpillars, not kill them! If you do have a pest problem, make sure to identify the culprits before taking action. Sometimes spraying isn’t the best option. If you find you need to apply a pesticide, use it selectively on the plants under attack. Don’t go wild with the spray bottle!

vanessa-annabella-west-coast-lady-on-verbena-dbg-19sept05-lah-183

Butterflies are usually associated with flowers, but not all flowers attract butterflies. Flowers that butterflies like tend to have flat tops, ideal landing pads for nectar-seeking adults. Suggestions include yarrow, coneflowers, zinnias, and of course, butterfly bush and butterfly weed. Butterflies are attracted to color, so the more flowers you have, the more butterflies will visit.

_butterflypavco_20100123_lah_7512-1I was surprised to learn that not all butterflies visit flowers! Early in the season, not many flowers are in bloom. Butterflies such as Weidemeyers Admiral and  Mourning Cloaks depend on sap, rotting fruit, and even animal droppings.  Placing cut-up fruit in your garden will attract these species.

A successful butterfly garden includes plants that provide caterpillars with food and adults a place to lay their eggs. If you want butterflies, you have to be willing to put up with some chewed leaves. For example, Tomato Hornworms are considered a ravenous garden pest, but they transform into fascinating Hummingbird Moths. Parsley “worms” become swallowtails. If you need help figuring out what’s eating your plants, bring a specimen to your local extension office.

tiger-swallowtail-larva-bf-lah-019rMany butterfly species require specific host plants. Lovage, for example, is excellent swallowtail food (and it distracts them from your parsley crop). Frequently, caterpillars depend on native species. You may have to do some research to find what’s appropriate for your area. garden. I found TheButterflySite.com to be particularly helpful. First you click on your state to learn which species you can expect to visit. Then click over to “Butterfly Host Plants” to find what to plant for those species.

Plant your butterfly garden in full sun. Like other insects, caterpillars and butterflies are “cold blooded” and need the sun to warm them.

tiger-swallowtail-cornvilleaz-2009-03-21-lah-788Provide shallow seeps and mud puddles. Butterflies get both water and minerals from these insect-sized wallows.

There are many excellent websites providing information specific to your area. If you live along the Front Range, I recommend:

According to Brinkman, “Colorado is home to 250 species of butterflies, more than anywhere else in North America.” How many can you entice into your yard?
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Photos, from top: Southern Dogface, West Coast Lady on Verbena, butterfly feeding on fruit, swallowtail caterpillar, adult swallowtail drinking from wet sand.

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