If you want to spice up your next fiesta, try discussing the
topic of immigration. Nothing
breaks through the crust of dry conversation like a political hot potato. Immigration has been simmering and
spouting on America’s back burner since the Statue of Liberty bid the tired,
poor, huddled masses to come. We
didn’t become a ‘melting pot’ without a little heat, after all. I am not looking to light a fire in
this column, but I do want to draw your attention to another population of
undocumented immigrants that is literally flying past border security.
Monarch butterflies flash their tiger-colored wings over the
Rio Grande with nary a thought to green cards or governments. They are embarking on a journey no
reasonable, safety-conscious human would attempt: 1,600 miles on parchment-thin
wings. Without so much as a map or
American Express card, these delicate daredevils take off into the vast
unknown. What could tempt them to throw
caution to the wind? Appetite, of
course.
They’re coming for a North American delicacy: Milkweed
(Asclepias sp.). When mama Monarch
finally rests her weary wings on a Milkweed plant, she has more than nectar on
her mind: she’s been carrying a load of progeny and it’s time to deliver
them. She lays her eggs (up to
400!) directly on the leaves. She’s
catering to her finicky offspring: milkweed is the only food they’ll eat. Flattering as this singular affection
may be, the plant does not take larval nibbling lying down.
The Milkweed/Monarch saga is a twisted plot worthy of a James
Bond flick. Milkweed, loaded with booby-traps,
carries a license to kill. Flowing
through its veins is a thick, latex sap.
One poorly placed larval bite can open a veritable floodgate of white
glue. Monarch larvae are easily
overwhelmed by the surge of goo: those that don’t drown in the flux, often find
their mouths glued shut. Less than
one third survive the namesake sap.
Those that live to die another day, learn to carefully deliver a kill
bite: they drain the main vein, leaving the foliage defenseless to their
feasting.
Monarch vs. Milkweed. The battle begins. |
After months of indiscriminant pruning by ravenous
caterpillars, the plant gets the last laugh. Fresh-from-the-cocoon Monarchs waltz through pollen as they slurp
sugary nectar through their proboscis.
Fluttering from blossom to blossom, they jumpstart seed production for the
Milkweed’s next generation.
Last summer I watched a flock of migratory Monarchs settle
into the neighbor’s Maple for the night.
The sun had set, but the branches flared to life as orange and black
wings flexed open and closed in the dusky light. I look forward to catching a glimpse of it this year, but Monarch
populations are declining as their wild milkweed habitats are
disappearing. You and I can have a
directly impact on their survival:
·
Being careful not to destroy stands of Milkweed
is essential. When they are gone,
the butterflies will be gone as well.
·
Incorporating host plants in our landscapes,
like Asclepias tuberosa, Butterfly
Weed, provides new habitat for Monarchs.
With its bright orange flowers and drought tolerant nature, it’s an
Illinois natural.
·
Avoid pesticide use. Insecticides kill butterflies and herbicides kill
milkweed.
Pretty pollinators make gardens doubly beautiful and keep
those flowers and fruits a-coming.
Let’s do our part to keep these south-of-the-border beauties floating
through Kankakee County.