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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.

Extension Publications and Videos

Information is available at your fingertips on a number of subjects.

Kansas State University Extension specialists have developed a number of publications to help solve your problems or learn. The following are your direct access to this helpful resource at K-State Research and Extension.

Johnson County Extension Master Gardener Fact Sheets

The Johnson County EMGs have created information fact sheets on gardening issues that pertain specifically to the Kansas City and Midwest (Zone 6) region.

The USDA Hardiness map was updated in 2023 for our area to be Zone 6b. Hardiness zones are based on the average annual minimum temperature in a given area. It only considers plants' cold tolerance, not the heat and humidity. Just to be safe, be conservative when choosing plants that push the boundaries of these zones. This article explains the challenges in greater detail.

Click on the following links to access the EMG Fact Sheets:

Let's Get Growing! Starting a Vegetable Garden

Here are all the videos you need to find success growing your own vegetables. 

Dig Your Dinner

From sowing seeds to sautéing your vegetables, and picking produce to preserving it, there is much to be known in the world of vegetable gardening!

This monthly webinar series features Agents Anthony Reardon (Horticulture-Small Farms) and Chelsea Reinberg (Nutrition, Food Safety, and Health) who discuss the connections between growing and serving foods, suitable to the seasons. Learn more

Do You Have Questions?

Have questions? The Garden Hotline is staffed by trained EMG volunteers and Extension staff who will assist you with questions.

Phone: (913) 715-7050

Email: garden.help@jocogov.org