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Johnson County

Research-based Information You Can Trust — Localized for your needs

Johnson County
11811 S. Sunset Drive
Suite 1500
Olathe, KS 66061

Office Hours:

Monday - Friday,
8:30 a.m. - 5 p.m.

(913) 715-7000
(913) 715-7005 fax
jo@listserv.ksu.edu

Map to our office

K-State Research and Extension is committed to making its services, activities and programs accessible to all participants. Reasonable accommodations for persons with disabilities may be requested by contacting Johnson County Extension at (913)715-7000. Notify staff of accommodation needs as early as possible.

Kansas State University Agricultural Experiment Station and Cooperative Extension Service

K-State Research and Extension is an equal opportunity provider and employer.

Bringing K-State to Johnson County

Here at the K-State Johnson County Extension Office, we pledge to serve our community in a variety of ways, from health and nutrition, to agricultural and horticultural needs, money management, and much more. We exist to help others through Kansas State University knowledge and information in order to better serve our communities, specializing in problem-solving, education, and community service. 

Since 1917, the Johnson County Extension Office has dedicated our time and resources to ensure that the community of Johnson County continues to grow and thrive.

Purchase tickets for the Public Garden Tour!

public garden tour

The Public Garden Tour is back, May 17 and 18. Purchase tickets here. Access six unique private gardens, learn from Extension Master Gardeners at the Garden Gallery Demonstration Garden; shop garden-themed items at the Garden Thyme Marketplace; and learn about educational resources and free services at the Extension Expo. Learn more

Now Hiring: Horticulture Extension Agent

we're hiring
We are hiring a Horticulture Agent to lead educational programming related to commercial landscapes, home lawn care, and ornamentals here in Johnson County. This agent will also manage the Johnson County Extension Master Gardeners, a thriving program made up of 492 volunteers who maintain nine community demonstration gardens. Applications are due May 14. Learn more

It's National Volunteer Week

The Johnson County Extension office provides a high level of service thanks to the assistance and dedication from our volunteers. This week, we want to say THANK YOU to each and every one of our volunteers. You each help make Johnson County a better place. Learn more about the impact of our volunteer programs.

Do I Need a Soil Test?

Soil fertility is important for good plant growth. Testing is the only way to know nutrient levels.

A test gives you accurate informa­tion about the type and amount of fertilizer or amendment to apply. Applying proper amounts decreases runoff that can pollute waterways. This protects the envi­ronment and saves you money.

A soil test measures pH and available nutrients.Johnson County homeowners are eligible to receive one free test (Package #1)  per household per calendar year.

Proper collection of a soil sample is important for accuracy and analysis. Follow these steps for taking good samples.

What is new?

Cooking Classes!

We have adult classes and kid classes, hosted by Extension Master Food Volunteers.

Summer Fun for Kids!

Looking for ways occupy children when school is out? We have options to keep youth engaged and entertained, while learning new skills and socializing with others. Learn more

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