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Horticulture and Gardening

The UI Extension, Nez Perce County office offers services and resources in horticulture and gardening.

Plant Clinic

Get research-based, common-sense answers to your gardening questions from certified Idaho Master Gardeners at the Plant Clinic. The clinic operates during the growing season beginning in May. Visit the Plant Clinic from 4-7 p.m. on the 3rd Mondays in the months May through August (May 20, June 17, July 22, and August 19) or 8:30-11:30 a.m. every Tuesday at the UI Extension, Nez Perce County office at 1239 Idaho St., Lewiston, ID.

We may also be reached year-round at our office, during office hours, by email at or by phone at 208-799-3096.

Plant or Insect Sample Submission Guidelines

If you have a plant, weed or insect problem, we will need to see a sample.

Bring samples to the UI Extension, Nez Perce County office for identification and diagnosis. It is helpful to fill out a diagnostic form to bring in with your sample.

Homeowners face many issues and decisions when establishing and maintaining a healthy lawn. Learn about best practices for weed, disease, insect prevention, proper timing and the use of chemical and organic solutions and appropriate aeration, fertilization and watering techniques for common lawn problems.

Low Water Use Landscaping — Xeriscape

Conserving water protects a natural resource and the amount you pay to maintain a landscape.

The Xeriscape Demonstration Garden next to the UI Extension, Nez Perce County office showcases traditional and alternative means of landscaping. Learn about water efficient landscaping and see growing examples of drought tolerant plants as they pass through the seasons.

Idaho Master Gardener Program

The Idaho Master Gardener Program is an educational opportunity for meeting the gardening information needs of the community. The purpose of the program is to prepare qualified volunteers to extend technical assistance and provide home horticulture information to the community.

Idaho Master Gardeners may assist with garden lectures, exhibits, demonstrations, school and community gardening, diagnostic services, research and related projects.

Master gardener training in the Lewis-Clark Valley is offered during even numbered calendar years. The 60 hours of classes are typically held on Tuesday afternoons from mid-January through April. Training includes classroom lecture, online modules and field trips to WSU and U of I campuses.

This program is held in partnership with the WSU Extension, Asotin County office.

For more information contact

Danielle Evans

Extension Educator — Horticulture


University of Idaho Extension, Nez Perce County

Physical Address:
1239 Idaho St
Lewiston, ID 83501

Mailing Address:
1239 Idaho St
Lewiston, ID 83501

Phone: 208-799-3096



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