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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

(913) 715-7000
(913) 715-7005 fax

Map to our office

Current News

Knowledge For Life Newsletter:

January 2019: Radon, Bobcats, Norovirus & Naturalists in Johnson County!


Extension Master Naturalist WordmarkExtension Master Naturalist Applications
Due January 22


Dr. Martin Luther King, JrNote: Our office will be closed:
Monday, Jan. 21 Martin Luther King Jr. Day


Radon KitRadon Kits

Jan. 16, 2019 — We Have Radon Kits! 

We currently have 500 kits available. Kits are available year-round

We recommend calling 
913-715-7000 to check inventory status 
before you head out for our office.


Fresh vegetables in a basketSaturday, Jan. 26 Community Garden Workshop 

10TH Annual Healthy Yards Expo logoHealthy Yards Expo Vendor Information

Healthy Yards Expo Vendor Application

Healthy Yards Expo, April 6, 2019


Johnson County K-State Research and Extension
2017 Annual Report


Soil sample in pyrex cup and soil test form Free Soil Testing for Johnson County Residents

How to take a soil test

Why take a soil test

AG Soil Testing


Johnson County K-State Research and Extension Master Gardener logoFor Lawn and Garden questions click here.


Office Hours:

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

Map to our office

Kansas State University is committed to making its services, activities and programs accessible to all participants. If you have special requirements due to a physical, vision, or hearing disability, contact Johnson County K-State Research and Extension, 913-715-7000.

Kansas State University Agricultural Experiment Station and Cooperative Extension Service

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