| Chlorosis of blueberries is usually due to soil that is insufficiently acidic (pH 4-5 is ideal) or poor drainage. Correct improper pH with sulfur. The amount to use depends on the pH change needed and the soil type, with heaavier soils needing more than lighter soils. Some fertilizers can also make the soil less acidic. An excellent source of nitrogen that does not make the soil less acidic, does put the nitrogen in a form utilized by blueberries, and costs relatively little is soybean meal (or, more expensive but available in smaller packages, cottonseed meal). Spread it in late fall at the rate of 1-2 pounds per hundred square feet. Lee Reich, PhD Books by Lee Reich: The Pruning Book Weedless Gardening Uncommon Fruits for Every Garden A Northeast Gardener's Year On Apr 4, 2007, at 11:08 AM, Hilborn.E@epamail.epa.gov wrote:
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