Fish emulsion should be applied to vegetable foliage every 10 days to two weeks during the growing season. Soil applications should be done every two to four weeks, according to Nature's Lawn & Garden.
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Aileen Clarkson has been an award-winning editor and reporter for more than 20 years, earning three awards from the Society of Professional Journalists. She has worked for several newspapers, including "The Washington Post" and "The Charlotte Observer." Clarkson earned a Bachelor of Arts in journalism from the University of Florida.