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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.

Lawn and Garden

Horticulture is the science and art of growing fruits, vegetables, flowers or ornamental plants.

In Johnson County, maintaining attractive home and commercial landscapes not only increases property values but promotes an improved quality of life that makes our community a great place to live.

Whether you have a question about lawns, vegetables, flowers, or landscape maintenance, Extension information is created for use by everyone, including homeowners, lawn services and nurseries.

In Johnson County, we have two agents. Please email garden.help@jocogov.org with questions.

Dennis Patton is responsible for ornamentals, trees, shrubs, flowers, turf,  horticultural environmental issues. He oversees the Extension Master Gardener program.

Anthony Reardon is responsible for Fruit/Vegetables, Small Urban Farms.

K-State Garden Hour Webinar Series

Join K-State Research and Extension Horticulture Agents from across the state as they discuss timely topics in horticulture. Free and open to all from Noon to 1 p.m. on the first Wednesday of the month. View past recordings as well. Pre-registration is required to participate in the on-line sessions.

Willie and the Salad Bonanza Contest

willie and the saladWillie and the Salad Bonanza is a contest open to elementary, middle and high school teams, along with other K-12 community organizations such as 4-H, Scouts, FFA or other teams, interested in the scientific principles surrounding plant growth. Learn more

Lawn and Garden Questions

Do you have lawn and garden questions? Please direct all gardening questions to our Garden Hotline, staffed by trained Extension Master Gardener volunteers and backed up by Extension staff who will assist you with your questions.