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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

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.

Healthy Yards Expo is this weekend!

healthy yards expoPlan to attend the Healthy Yards Expo, a free, family friendly event that will show you how to make greener choices for lawn and home. 

Saturday, April 13
9 AM to 2 PM
Shawnee Civic Centre

The Expo features businesses, non-profits, seminars, and tips to help residents become greener in their lawn, garden, and home care. It’s a one-stop learning event on green ideas and services. Learn more

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

VITA - Final Week!

volunteer income tax assistance

Volunteer Income Tax Assistance (VITA) is a free tax return preparation service for qualified individuals making $64,000 a year or less. Drop off services are finished for this year, but we still have in-person sessions (No appointments; first come, first served). Learn more.

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?

Preventing Diabetes with Simple Lifestyle Changes

foodTuesday, April 16, 2024  |  6:00 PM - 7:00 PM (Extension Office)

This free informational session discusses prediabetes and how you can prevent the onset of diabetes through simple nutrition and lifestyle changes. Register Here

Pristine Potatoes

poatoeWednesday, April 24, 2024  |  12:00 PM - 1:00 PM (Online via Zoom)

Whether baked, fried, or mashed, potatoes are one of the most popular vegetables in the culinary world to be enjoyed. Learn all about serving AND growing them in the April edition of Dig Your Dinner. 
Register Here