1. K-State home
  2. »Research and Extension
  3. »Johnson County

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

Current News

  Knowledge For Life Newsletter:

 October 2019

Cover of 2018 Annual Report

 2018 Annual Report


  Emerald Ash Borer


Widespread die back is evident

in the KC area. Remove your

tree if it is infected with this insect.

   Picture of bat

Bat Informational Sheet

 Scooping soil into a plastic bag for a soil sample


Free Soil Testing for Johnson County Residents

How to take a soil test

Why take a soil test

AG Soil Testing

Radon Kit




Radon Kits: Kits are available year-round


Radon in Johnson County, Kansas

Testing for Radon

Buy your Do-It-Yourself radon test kit here

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.