Invasive Japanese beetles are back in Denver and Colorado — and they are hungry


They are baaaaaaaack.

Yup, it’s official, Japanese beetles (Popillia japonica) have returned to infest Colorado gardens — albeit possibly a bit afterwards than normal, some gardeners have observed.

The shiny, round, invasive pests commonly display up in June and adhere all over all summertime — what’s worse, the most trustworthy process for receiving rid of them is waking up at the crack of dawn and plucking them off your vegetation a single by one (ew) and then drowning them in a bucket of h2o.

Central Denver resident Carol LaRoque gets rid of her bugs in a a little bit different way — by feeding them to her neighbor’s chickens, who rapidly gobble them up (the animals are observed in numerous resources as an excellent and efficient pure beetle repellent). She stated she’s plucked only about a dozen beetles off her roses so far, but is sure this is just the commencing.

“It does appear to be like they emerged later on this 12 months,” she famous. “I didn’t write down the date last yr, but it appeared like by some time in late June, we had previously experienced them very last year.”

Colorado gardeners have been rapid to elevate the alarm about the return of the leaf- and flower-hungry fiends. Colorado Point out University’s Learn Gardeners have been publishing about them on social media given that June 29, with a few helpful fact sheets about controlling them and holding them out (The Denver Put up has its have information below), but they have so much been fewer in quantity.

The late starting to beetle season in some areas may possibly be thanks to the dry winter Colorado skilled, according to Richard Levy, a scientific info supervisor at the Denver Botanic Gardens, where Japanese beetles are just now starting to demonstrate up.

Japanese beetles lay their eggs in turf grass, in which they invest 10 months in the larval stage underground. Frozen, barren soil uninsulated by snow for extensive intervals of time can direct to later grownup beetle emergence from the ground, and that may possibly be what some regions are observing now.

Though they surface to be leaving the rose bushes by itself in favor of the hollyhocks (for now), Denver Botanic Gardens communications director Erin Bird remembers yard volunteers owning to scoop off hoards of beetles by this time in years previous.


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Angela M. Arriola

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