Nursery & Landscape Plant Health

1.) Disease Prevention & Diagnosis for Nursery Crops (6 weeks, self-paced · 4 OLCB CEHs)
Catching a disease outbreak two weeks late can wipe out four years of growing a plant to sellable size. This course, taught by OSU Extension plant pathologist Dr. Luisa Santamaria, trains you and your crew to spot the early signs before they turn into inventory losses. It's also offered fully in Spanish, so your whole crew can get certified in the language they work in. Bonus: it doubles as prep for the pesticide licensing exam.   Click to learn more about the Disease Prevention & Diagnosis for Nursery Crops program.

2.) Landscape Plant Identification I: Fundamentals (On demand · 4 OLCB CEHs)
The foundation for the whole plant ID series: nomenclature, terminology, and plant morphology, the vocabulary you need before the next three courses make sense. If a client asks what's actually in their landscape, this is where you get sharp enough to answer with authority. Click to learn more about Landscape Plant Identification I: Fundamentals program..

3.) Landscape Plant Identification II: Spring Flowering Trees and Shrubs (On demand · 4 OLCB CEHs)
Seventy-two spring flowering trees and shrubs you'll run into constantly in Northwest landscapes, plus the pests and diseases each one is prone to. Knowing this cold is what separates "I think that's a viburnum" from being the person on the crew everyone asks. Click to learn more about Landscape Plant Identification II: Spring Flowering Trees and Shrubs program.

4.) Landscape Plant Identification III: Street and Shade Trees (On demand · 4 OLCB CEHs)
Sixty-six street and shade trees, and what actually makes a tree suited for that role versus just being a tree. Useful the next time you're specifying trees for a municipal or commercial job and need to defend the choice. Click to learn more about Landscape Plant Identification III: Street and Shade Trees program.

5.) Landscape Plant Identification IV: Conifers and Companion Broadleaf Evergreens (On demand · 4 OLCB CEHs)
Seventy-two conifers and evergreens rounding out the series. Complete all four Plant ID courses and you've banked 16 CEHs, your entire two-year requirement, from one well-organized series you can work through at your own pace. Click to learn more about the Landscape Plant Identification IV: Conifers and Companion Broadleaf Evergreens program.

Home Horticulture

6.) Certificate of Home Horticulture (13 weeks · 16 OLCB CEHs | also 24 NALP CEUs)
This is the deep track: soil science, IPM, plant diagnosis, and sustainable landscape design over 13 weeks, taught by the same OSU faculty who train Oregon's Master Gardener Volunteers. One certificate covers your entire two-year CEH requirement in one enrollment, plus it's a credential you can put in front of clients who care about who's touching their yard. Next session is winter 2027. Click to learn more about the Certificate of Home Horticulture program.

7.) Home Horticulture Summer Intensive (Self-paced · 16 OLCB CEHs | also 24 NALP CEUs)
Same curriculum as the instructor-led certificate above, compressed into a self-paced format for anyone who can't commit to a 13-week cohort schedule. Note for the page: the site currently lists registration as closed September 1, 2026 with access through December 31, so this one may need a status check before it goes live, or a "next intensive" placeholder. Click to learn more about the Home Horticulture Summer Intensive program.

Turfgrass & Golf Course Management

8.) Introduction to Turfgrass Management (6 weeks · 20 OLCB CEHs | 3 GCSAA Class A credits)
The entry point to the series: cool-season grass ID, fertilizer and irrigation basics, and the mowing-to-growth relationship that most lawn problems trace back to. Built for anyone who fields customer questions about turf, whether that's a crew lead, a hardware store consultant, or someone tired of guessing at their own lawn. Click to learn more about the Introduction to Turfgrass Management program.

9.) Introduction to Golf Course Management (6 weeks · 20 OLCB CEHs (3.6 GCSAA Class A credits)
Agronomics, putting green construction, maintenance budgeting, and IPM, the operational side of running a course rather than just mowing one. A practical step up for crew members eyeing a superintendent track. Click to learn more about the Introduction to Golf Course Management program.

10.) Pesticide Applicator Education and Safety (6 weeks · 18 OLCB CEHs)
Built specifically to prep you for the Oregon Department of Agriculture pesticide applicator exam, covering the laws, safety, and label-reading you'll be tested on. If pesticide licensing is on your to-do list, this is the one course on this page that pulls double duty: exam prep and CEHs in one enrollment. Click to learn more about the Pesticide Applicator Education and Safety program.

11.) Irrigation and Drainage (6 weeks · 15 OLCB CEHs)
Designing, installing, and troubleshooting irrigation and drainage systems for Pacific Northwest soils and conditions, including how to actually run an irrigation audit instead of guessing why a zone is underwatering. Directly billable knowledge for anyone who quotes irrigation work. Click to learn more about the Irrigation and Drainage program.

12.) Cool-Season Turfgrass Diseases and Suppression Using Fungicides (6 weeks · 20 OLCB CEHs)
How to identify turf disease early, understand what's driving it environmentally, and treat it without over-relying on fungicides that build resistance over time. Saves you from the expensive trial-and-error most crews learn this the hard way. Click to learn more about the Cool-Season Turfgrass Diseases and Suppression Using Fungicides program.

13.) Turfgrass Mathematics (6 weeks · 20 OLCB CEHs)
The calculations that actually run a turf operation: fertilizer and pesticide rates, seeding rates, sprayer and spreader calibration. Get this wrong and you're either wasting product or under-applying and redoing the job. Get it right and you look like you know exactly what you're doing, because you do. Click to learn more about the Turfgrass Mathematics program.

14.) Turfgrass Insects and Weed Management (6 weeks · 20 OLCB CEHs)
Identifying the insects and weeds that show up on Pacific Northwest golf courses, lawns, and sports fields, and building an IPM-based plan to manage them without leaning entirely on chemical control. Click to learn more about the Turfgrass Insects and Weed Management program.

Land Management

15.) Wildfire Preparedness in Agriculture (On demand · 2 OLCB CEHs)
Oregon OSHA now requires farms and rangeland operations to have a documented wildfire emergency action plan. This course walks you through building one, plus defensible space, fuel breaks, and equipment-related fire prevention, in exchange for a $20 course fee and one afternoon. Cheapest CEHs on this entire page, and arguably the most consequential if you're managing rural acreage. Click to learn more about the Wildfire Preparedness in Agriculture program.