Master Gardener Program

Program not found

Master Gardener Plant Sale


Dallas County Fairgrounds // Community Building

28061 Fairground Rd. 

Adel, Iowa 50003


9:00 AM - 2:00 PM

Doors open at 9:00 AM. 4-H club will be selling coffee. 


Accepting cash and check. Credit Cards will have a 4% service fee. 

Plant Care // Hardening Transplants

Gradually introducing seedlings to outdoor growing conditions increases their food reserves, reduces the severity of transplant shock, and increases the chance of survival in the garden. This process is called hardening.

About 7 to 10 days before setting plants in the ground, place the seedlings in a shady, protected location outdoors. Over the next several days, gradually expose the seedlings to longer periods of sunlight.

Allow the plants to dry slightly between waterings. During the hardening process, move the seedlings indoors if the forecast calls for temperatures below 40°F.


Gardening For Butterflies and Pollinators

Planting and Harvesting Times for Garden Vegetables

Composting Yard Waste

See more publications at the ISU Extension Store

Connect with Gardeners 

Master Gardener Facebook

Master Gardener Instagram


Complete the survey to be entered to win a prize. 



Plant Sale Document




Click to access the Plant Sale Document

Dallas County Master Gardener Demonstration Garden

View of the Garden

Check out the garden located on the Dallas County Fairgrounds. If you would like to donate please call the extension office at 515-993-4281 or mail a check to Dallas County Extension 28061 Fairground Road,  Adel IA 50003

Seed Libraries



  • Dallas County Extension  I  28061 Fairground Rd. Adel
  • Adel Public Library  I  303 S 10th St. Adel
  • Minburn Public Library  I  618 5th St. Minburn
  • Waukee Family YMCA  I  210 N Warrior Ln. Waukee
  • Perry Public Library  I  1101 Willis Ave. Perry
  • Fruitful Vine Garden  I  Westview Church in Waukee
  • Granger Public Library I 2200 Walnut St. Granger


Master Gardener Information

How to Become a Master Gardener

Applications open in the spring with a deadline of July 1.

If you'd like us to notify you when applications open again, please email

This year the application and training are being completed online. 

Application Details

Who are Master Gardeners?

Master Gardeners are community members from a wide variety of backgrounds. They are passionate about serving their communities and sharing gardening best practices. They have taken the Master Gardener training and share their time and expertise as volunteers in community gardens, city beautification projects, and farmers markets to name only a few areas. They love to share their knowledge and give back to the community as volunteers. Any resident of Linn County is invited to apply to become a Master Gardener.

What happens after the training?

After you complete your training, you'll volunteer in the community at approved Master Gardener projects throughout the county. You'll need to complete 40 hours of volunteering by December 31 of the year following the completion of your training. Projects include working in community gardens with community volunteers, administrative work, answering questions from the public, assisting at our plant sale--there are many different opportunities available.

Thereafter, you'll remain active by attending ten or more hours of continuing education and contributing 20 hours or more of volunteer community service.

Not interested in volunteering?

Register for the core course as a Pro-Hort trainee ($550 fee) and receive a certificate upon completion of the course.

If you have any questions, call the Extension Office at 515.993.4281.

Master Gardener Hortline

We answer horticulture questions in an unbiased, research-based manner.

The Dallas County Master Gardener Hortline is a free service.

Hortline (515) 993-4281

Summer Hortline hours:  March 1st - Oct 31st

  • Monday-Thursday 9:00am-Noon and 1:00pm-4:00pm
  • Friday 9:00-12:00

Winter Hortline hours:  Nov 1st - Feb 28th/29th

  • Monday-Friday 10:00-12:00

You can also email Megan Will, the Master Gardener Coordinator at

In addition, ISU has resources that can help you at the Horticulture and Home Pest News website. You'll find frequently asked questions, newsletter, links to publications, and dozens of videos on a wide range of topics. Check it out!