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Citywide Calendar

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Welcome to Longmont's Calendar of Events!

The events listed on this Calendar are City of Longmont sponsored events and is not a comprehensive list of all activities happening around the community. Dates and times of these events are subject to change without notice.

Trash, Recycling, & Composting - Holidays & Events

View via the address-based Online Collection Calendar and sign up for reminders.

Other Community Events

To view other events being held around Longmont, please visit the Longmont visitors bureau events calendar at VisitLongmont.org.

Subscribe to the City Calendar

To get events emailed to you directly, sign up for the Calendar eNotifications and then select the Calendar categories.

The Emerald Ash Borer in Longmont

Come to Library to hear how you can protect your trees from the deadly Emerald Ash Borer.
  • Despite its diminutive size, the emerald ash borer has decimated millions of trees in the U.S. and Canada.  However, its discovery in Longmont in 2016 was the first spotting of the invasive flying insect in the state outside of the City of Boulder.  
  • Learn about this deadly threat to our city's trees from the men who know it best, City Forester Ken Wicklund and EAB expert Brad Stadsvold.
  • Find out how to spot the emerald ash borer's telltale signs and what you can do to protect your trees before it's too late.
  • Get more information on the City's webpage dedicated to this nuisance insect.
  • Can't attend? This program will be streamed live online, courtesy of the Longmont Observer. You can view these livestreams on the Longmont Observer website and on its Facebook page.
  • Registration is required and will open here on April 20 at 10 am. No email address?  Call (303) 651-8472 to register.

The Friends of the Longmont Library generously support library programs and services.

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