Oil Crops

The following crop fact sheets give basic information on growing oil crops in the Willamette Valley:

Oil Crops Economics

Oilseed Processors

Madison Farms, Echo OR

Pendleton Grain Growers, Pendleton, OR 

Willamette Biomass, Rickreall, OR

Biofuel Processors and Dealers 

SeQuential, Salem, OR

Oil Crops Nutrient Management

Nutrient Management in Oil Crops

The new OSU Nutrient Management Guide for Peppermint is located here.

Meadowfoam nutrient requirements have been evaluated by many OSU-grower cooperative field trials. Information for other oil crops is derived from experience and information from other areas. Some oil crops require a low amount of spring N compared to winter wheat or grass seed crops.

Meadowfoam usually requires only modest amounts of spring applied nitrogen to produce top yield. Similar to fall seeded grain crops, fall fertilizer application is usually not necessary. Spring nitrogen generally is applied in February or early March prior to stem elongation. Spring nitrogen applications should not exceed 40 to 50 pounds N per acre. Over supply of nitrogen leads to excessive foliage, increased incidence of lodging and disease. No yield benefit has been observed from meadowfoam to application of phosphorus, potassium, sulfur, or micronutrients unless soils are deficient. Use a winter wheat soil test and recommendations to determine adequacy of these nutrients.

Brassica crops such as canola often benefit from boron application.  

 Applying Lime to Raise Soil pH for Crop Production (Western Oregon), EM 9057

Soil Acidity in Oregon: Understanding and Using Concepts for Crop Production, EM 9061

Nutrient Management Guide for Peppermint Grown in Western Oregon

Soil Test Interpretation Guide

Monitoring Soil Nutrients Using a Management Unit Approach

Oil Crops Weed Management


The OSU Weed Science Group conducts greenhouse, laboratory and small plot herbicide evaluation trials in support of the development of weed management activities in the diverse cropping systems of Western Oregon.  Labeled and experimental herbicides are evaluated for crop safety and weed control efficacy in the following crops:  Winter and Spring Wheat, Cool-season Grasses grown for seed, Native cool-season Grasses and forbs grown for seed, Canola, Meadowfoam, Camelina, Clovers and Peppermint among others.

Annual Bluegrass

Italian Ryegrass

Prickly Lettuce

Field Mustard


Mayweed Chamomile

Weed Science Related Links:

Weeds of the West

Weeds of California and Other Western States 

PNW Weed Management Handbook 

PNW Weed Management Extension Publications Series

Oregon Society of Weed Science

Western Society of Weed Science


Weed Identification Resources:

Weed Science Society of America

Center for Invasive Plant Management

USDA Plants Database


Herbicide Labels:

CDMS Database

Oil Crops Disease/Insect Management

Oil Seed Disease

Botrytis (meadowfoam)

Oil Seed Insects

Cabbage Maggot

Cabbage Seedpod Weevil

Meadowfoam Fly