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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.

Johnson County Extension Master Gardener
Fact Sheets

Trees and Shrubs

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:

Return to EMG Fact Sheets

K-State Research and Extension Johnson County Master Gardener logo

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