Tree Seedling Giveaway
Apr
18

Tree Seedling Giveaway

  • 1301 Arapahoe Avenue Boulder, CO, 80302 United States (map)
  • Google Calendar ICS

Thank you to everyone for joining the city during Arbor Day weekend, getting a free tree seedling and native plant, and commemorating Boulder’s 43rd year as a Tree City USA and for the seventh year, a Tree City of the World.

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Landscape Contractor Training
Apr
25

Landscape Contractor Training

Join The City of Boulder in partnership with Wildfire Partners, PACE, and CSU Extension for a full-day training aimed at helping landscape professionals deliver climate-resilient, wildfire-aware, and water-wise landscapes.

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2026 Zonta Foothills Climate Justice Forum
Apr
25

2026 Zonta Foothills Climate Justice Forum

Hear from an inspiring panel of experts on how their work helps us understand the effects of climate change on women, girls, families, and our community. Meet leaders from local nonprofits and other organizations to learn more about ways to make a difference! 

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Why Private Land Conservation Matters
Apr
28

Why Private Land Conservation Matters

Tony Caligiuri, President of Colorado Open Lands (COI), will introduce the audience to COI’s work to protect landscapes and our beloved wildlife on private lands across Colorado.

Photo of Sandhill Cranes in field, by Tony Caligiuri

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Sep
19

12th Annual Bee Boulder Festival

Please join Cool Boulder and Boulder Parks and Rec for the 12th Annual Bee Boulder Festival on Saturday, September 19, 2026 - from 10:00 a.m. - 2:00 p.m. in Boulder’s downtown Central Park (next door to the Boulder Farmers Market on 13th Street)!

This year's Bee Boulder Festival will once again feature two performances by Jeff & Paige along with guided kids’ arts and crafts activities (carried over from last year!) and interaction with nearly 40 local organizations that provide important support for pollinators, biodiversity and the environment - and will inspire you with new ideas for how you too can create positive impact!

The Bee Boulder Festival coincides with the Boulder Farmers Market located just East of the Bee Boulder Festival so you can make the most of a fall Saturday, while learning how your actions can support pollinators, biodiversity and the environment!

The Cool Boulder campaign focuses on mobilizing community members around nature-based climate solutions, which includes the regeneration of local soils, trees and habitats.

We will be seeking volunteers for this event so please check back if you are interested!

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Learn to Grow Your Own Fruit Trees
Apr
11

Learn to Grow Your Own Fruit Trees

This workshop will equip you with the skills to select and plant fruit trees, manage tree’s water and nutrient needs, build resilience to pests and diseases, and create a welcoming environment for beneficial insects.

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Understanding Front Range Soils
Apr
3

Understanding Front Range Soils

What: A good soil is truly the key to successful gardening. What is soil, let alone good soil for plant growth? Learn the characteristics of our Front Range soils and what can and cannot be done to improve them. Compare landscape soils with native or agricultural soils. Discussion focuses on soil texture, structure, pore space, pH, fertility and testing to deepen your understanding of soil. The importance of the living component of soils, adding organic matter and composting is emphasized.

  • Details:

    • This event costs $34 for Denver Botanic Gardens members, and $40 for non-members

    • Registration required

    • Register for Understanding Front Range Soils

    • This course fulfills a requirement for the Rocky Mountain Gardening certificate program

  • When: Friday, April 3 9:30-11:30 AM

  • Where: Denver Botanic Gardens at York Stret

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Building Soil Fertility
Mar
15

Building Soil Fertility

Mikl will discuss how to support soil life, enrich poor soils, and improve plant health and nutrition from the bottom up: composts, fertilizers, mulching, worms, deficiencies, and tilth. 

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