Add to ORKGRevised January 1996. Reprinted August 1998. Facts and recommendations in this publication may no longer be valid. Please look for up-to-date information in the OSU Extension Catalog: http://extension.oregonstate.edu/catalogFertilization is part of the overall management of peppermint and spearmint that includes planting of disease-resistant varieties, selection of appropriate soils, irrigation, timely harvest, and control\ud of diseases, weeds, insects, and nematodes. Other OSU publications cover pest control on peppermint (see page 4). Crop response to fertilizer may differ with soil type, weather, cultural practices, type of fertilizer, and method of application. Soil test results and experience can help\ud you determine the proper rate...