1. K-State home
  2. »Research and Extension
  3. »Johnson County
  4. »Lawn and Garden
  5. »Horticulture Sources

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:

Make an appointment, before coming into the office.

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

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

Horticulture & Local Foods Resources


Got Soil?

Beginning May 13, we will accept soil samples at the Johnson County Extension Office. Here are a few things you will want to know:

  • Please bring two cups of soil in a resealable, quart-size plastic bag.
  • Write your name and phone number on the outside of the bag.
  • Print off and fill out a soil test request form to accompany your sample.
  • Once you arrive at the office, leave your sample with your complete form in the box labeled "Soil," outside the Extension door in the lobby. Staff will collect the samples throughout the day.
  • Johnson County residents receive a free soil test each calendar year.
  • If you would like to purchase an additional sample, you are welcomed to do so. If paying with cash, at this time we will only accept exact payment. Checks can be made out to Johnson County Extension. Credit/debit is still accepted at the office.
  • You can also mail in your sample.


Extension Master Gardener Application is now open.

The May 15-16 Public Garden Tour has also been cancelled.