You planted milkweed because you wanted to help monarch butterflies. But now you're seeing all sorts of bugs on your plants. And you're not sure how you feel about it or what to do.
I know this because so many people come up to me after I give talks, a little self-conscious, and ask me if this is a problem. They feel protective and proud of their efforts and their "cats" (they pull out their phones and show me pictures of their caterpillars) but a bit worried that the other bugs will eat all the food — or spread to other parts of the garden.
You're not alone. There's been a big push for this pollinator-friendly plant — the sole source of food for monarch butterfly babies — resulting in it being planted in more home landscapes and small gardens, vs. roomier native prairies or meadows. Now those home gardeners are discovering that milkweed isn't just for monarchs.
You might even say that milkweed makes a village; it comes with a sizable surrounding population of invertebrates, amphibians, birds and other fauna. Growing milkweed is not for the fainthearted — the plant hosts an ongoing drama featuring gluttony, violence, gore and romantic escapades. There's always something to see, so be sure to visit and observe at different times of the day and season.
Depending on their needs, these "bugs" and other creatures that make up this food web will consume different parts of milkweed directly as food. Others will act as predators and eat those bugs, while still others will clean up after them all. Occasionally, some bugs just like to hang around the area.
This is especially the case if you planted common milkweed, Asclepias syriaca, the preferred host plant of 90 percent of Mexico-bound monarchs. You might say it's where the action is.
Here are just a few of the fascinating characters, in addition to monarch caterpillars, that you may find in the milkweed community:
Milkweed longhorn beetles: Elongated reddish-orange beetles with black spots and long antennae. I found a few of these the other day; they are the guys eating small holes in the tips of the leaves. Since I plant milkweed to be eaten, I'm not worried about this minimal damage.