Visit our Colorado State Extension office for more news, tools and resources.

Close Icon
The CSU Extension office in Broomfield City & County provides assistance and programs for citizens in the areas of Horticulture: Yard & Garden

What’s New   arrow

What’s New, Broomfield!

Broomfield County Extension collaborates with businesses, organizations, and other counties to extend the reach of programming. Check out new  programs and opportunities.

Mixed flowers in Broomfield demo gardenLearn More

Xeriscape Garden Tours

Learn about water-wise plants and techniques for a successful Colorado landscape in this guided tour of the Broomfield Xeriscape Demonstration Garden. The tour is offered from 9-10:30 a.m. on the following Saturdays:

  • July 13
  • Aug. 10
  • Sept. 7

The garden is located east of the parking lot at the George Di Ciero City and County Building, 1 Descombes Dr.

Master Gardener at help desk

Ask a Master Gardener in Person

Broomfield Master Gardeners are available this summer to answer horticulture-related questions at convenient community locations.

They also have walk-in hours from 9 a.m. to 1 p.m. on Tuesdays and Thursdays at the CSU Extension Office in the Broomfield Library. Prefer a call-back? You may leave a message anytime on the Master Gardener Helpline at 303.464.5554, or submit your question using this online form.

Learn More

Front Range Tree Recommendations

The recently-updated Front Range Tree Recommendation List is now available. Developed through a collaborative Green Industry project, this list is a go-to resource for professionals and consumers alike. Whether you are planning a new landscape or replacing a tree, you will want to check out this comprehensive guide.

Learn More

Free Gardening Webinars

CSU Extension has released the 2024 lineup of free gardening webinars, covering everything from favorite perennials to urban arthropod pests to starting native plants from seed. Classes are presented by horticulture experts from across the state. Visit the PlantTalk Colorado website for topics, dates, registration links, and recordings of previous classes!

Join Now!

Join the Seed Library

If you haven’t signed up yet, submit your Membership Form now so you can start borrowing (and donating!) seeds at the Broomfield Seed Library.
Look for the seed collection in the repurposed card catalog located on the second floor of the Broomfield Library. The selection varies depending on donations and seasonality, so you’ll want to check frequently to see what’s available.
Sarada’s Greek mountain tea Learn More 

Plant Select® 2024 Collection

Each year Plant Select® introduces new waterwise plants that have been specially developed for this area. Plants are trialed and tested for 2-5 years at Denver Botanic Gardens, Colorado State University, and public and private gardens.

Check out the 2024 selections, including Sarada’s Greek mountain tea (shown left), a striking replacement for traditional lamb’s ear.

Learn More

Green School Short Courses

If you love gardening and are looking for in-depth, Colorado-specific classes, look no further! CSU Extension offers four short course bundles depending on your particular area of interest .

Enroll anytime for one or more of the self-paced online classes: Colorado Gardening Foundations, Landscape Management Basics, Plant Diagnostics, and Grow Your Own Food. The price is $195 per course.

Learn More

Caregiver Workshop Series

CSU Extension partnered with national speaker, Jane Barton, to explore a variety of issues related to caregiving: the personal impact of caring, health care options, advance directives, community resources, and more.

Webinars recordings are available in English and Spanish on the Caregiver Workshop Series YouTube playlist.

Bird with Spent SunflowerGet Directions

A Garden for All Seasons

Thinking about converting turf to xeriscape next year? Winter is a great time to peruse magazines and websites for water-friendly designs, but it’s also helpful to see firsthand what the plants will look like in all seasons. Will they provide winter interest or help sustain wildlife year-round? Find out at the Broomfield Xeriscape Demonstration Garden, home to a large selection of waterwise perennials, trees, and shrubs. It’s open all day, every day, and you never know what (or who) you’ll see there!

CSU Flower Trial GardenLearn More

Visit the CSU Flower Trial Garden

If you missed the Public Evaluation Day on Aug. 5, don’t despair! CSU’s trial garden is open daily to the public during daylight hours, and it’s free! Here are just a few testimonials:

  • This is one of the best trials in North America, maybe THE best in North America.
  • So very lovely. A real gem in Fort Collins.
  • Listed as #5 of “Best Things to Do in Colorado” by VacationIdea Magazine.
  • Absolutely beautiful place. Full of joy and happiness.

Gelato PruneLearn More

CSU Flower Trial Winners

Each year, Colorado State University’s Annual Flower Trial Garden tests and analyzes the performance of more than 1,000 varieties of annual bedding plants in Colorado’s harsh growing conditions.

Learn more about CSU’s Flower Trial Garden — the largest of its kind west of the Mississippi — and the newest award winners.

Learn More

Plant Select® “New for 2022” List

Each year Plant Select® brings new plants to garden centers and wholesale suppliers that have been specially developed for this area. Plants are trialed and tested for 2-5 years at Denver Botanic Gardens, Colorado State University, and public and private gardens.

Visit the Plant Select® website to learn about the seven new plants introduced this year and where you can find them.

Disaster Guidebook Cover

Disaster Resources Available

CSU Extension has published a guidebook in English and Spanish to aid individuals and communities impacted by the recent Boulder County fires in the recovery process. Here are the links for downloading:

Little Free Library in Demo Garden

A Little Free Library, Garden-style!

CSU Extension recently installed a Little Free Library at the Broomfield Xeriscape Demonstration Garden, but there’s a twist: the books for both adults and children are horticulture-related.

Consistent with the “Take a Book, Share a Book” philosophy, visitors are invited to borrow a book. Gardening book donations also are welcome at this Little Free Library!

Home-preserved jamsUpcoming Classes

Online Cottage Food Safety Training

Are you interested in producing food items from a home kitchen to sell to the public? If so, the Colorado Cottage Foods Act requires you to complete a food safety training course. CSU Extension offers online training that meets this requirement and (upon passing) provides you with a certificate of training valid for three years. 

Check this schedule for online courses offered statewide. Registration is $50 (plus fee).

Colorado Master Gardener logoSubmit a Question

Ask a Master Gardener!

Broomfield Master Gardeners are available year-round to answer horticulture-related questions. Send an email to, call the helpline at 303.464.5554, or submit your question using this form

You may also consult this list of local Horticulture FAQs, which is organized by season.

Fertilizing LawnWatch Video

Residential Lawn Care

If you missed it in real time, you can watch a recording of this GREEN series class taught by Sarah Schweig, Broomfield County Extension Director & Horticulture Agent.
Grow & Give graphicMore Information

Learn, Grow, Share!

Grow and Give is a modern victory garden project with an Extension twist. Started in 2020 to make a local impact on food security, Grow and Give connects backyard and community gardens with food donation sites across the state.

CSU Extension’s Grow and Give website offers a TON of great gardening resources in English and Spanish. Be sure to check it out!

Register your garden to join the Grow and Give community and log your donations to friends, family and neighbors.

Looking for a place to donate? Visit the Grow & Give website to find a site near you – there are two in the Broomfield area!

Tomato plants in planter

Container Vegetable Gardening

Did you miss it in real time? Watch a recording of this class taught by Sarah Schweig, Broomfield County Extension Director & Horticulture Agent.

Bee House

Native Bee Watch

Check out the new native bee house recently installed at Broomfield’s demonstration garden! If you’re interested in helping monitor the bee population in Broomfield, read more about CSU Extension’s Native Bee Watch program.

seed starting collage View Recording

Virtual Seed Starting Class

You may have missed it in real time, but you can watch a recording of this class taught by Sarah Schweig, Broomfield County Extension Director & Horticulture Agent. Topics include supplies, timing, and techniques for starting vegetables and annual flowers indoors. 

Money management iconFinance Resources

Money Management Basics

Learn to stretch your money through these free online workshops offered by Broomfield FISH in conjunction with the City and County of Broomfield and CSU Extension.

Check back for the next financial literacy workshop dates. In the meantime, here are resources from the previous series:

Variety of vegetablesMás información

¡Recursos Nuevos en Español!

CSU Extension’s statewide horticulture team is working hard to offer more gardening resources in Spanish, including videos, numerous publications, and an in-depth Colorado Vegetable Guide. An English version of the guide also is available.

Hands holding seedling in soil
Submit a Question

Need Gardening Advice?

Broomfield Master Gardeners are available year-round to answer your horticulture-related questions. Call the helpline at 303.464.5554, send an email to,  or submit your question using this form

Centennial Outreach by Americorps Volunteer at Broomfield LibraryView Video

Watch our AmeriCorps Team in Action

CSU Extension’s dedicated AmeriCorps members created and distributed more than 650 take-and-make STEM kits to Broomfield area children in the second half of 2020. This effort included a stop at Centennial Elementary in partnership with Community Food Share and the Broomfield Library. Team member Diamila Konate, pictured left, helped hand out STEM kits and free books. Watch this video to learn more about this community outreach effort.

Didn’t receive a kit? No problem! Most of the kits can be recreated using common household items. You can follow along with these instructions.

Drawing of STEM toolsLearn More

Making a Difference in Broomfield!

CSU Extension now has three AmeriCorps service members working out of its Broomfield office. These important team members develop and deliver STEM programs in out-of-school settings to local students.

Broomfield Library Entrance

Our Location

Broomfield County Extension is located in the Broomfield Library. We are open Monday through Thursday from 9 a.m. to 1 p.m., with live horticulture help on Tuesdays and Thursdays. To request a specific appointment time, email

A group of students learning how to make a birdhouse

Look what we made!

CSU Extension Broomfield and CSU Extension 4-H STEM specialists joined staff from Broomfield Library and Broomfield Open Space and Trails in a full-day outreach event at Centennial Elementary School on Jan. 24. Students built and decorated bird houses, learned the basics of birding, and contributed their bird sightings to the Broomfield Naturalists citizen science project.