North American Fruit Explorers mailing list at ibiblio

[Lee Reich <garden@leereich.com>]

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

garden@leereich.com 

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:

Can anyone guide me as to an organic product to remediate chlorosis on

blueberries?

I have been correcting it with Miracid foliar feeds in the spring, which

works quickly and lasts the season.  I have tried Ironite with no

success.  I prefer to garden organically and would like an alternative

to the miraculous Miracid if one exists.

Betsy Hilborn

7a

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