Viewing post #818530 by sooby

You are viewing a single post made by sooby in the thread called Coffee grounds/tomatoes.
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Mar 29, 2015 9:12 AM CST
Name: Sue
Ontario, Canada (Zone 4b)
Annuals Native Plants and Wildflowers Keeps Horses Dog Lover Daylilies Region: Canadian
Butterflies Birds Enjoys or suffers cold winters Garden Sages Plant Identifier
There shouldn't be enough nitrogen in the coffee grounds to cause a problem, they're only around 2% N and that is organic nitrogen so not available to plants until microorganisms have converted it to forms they can use, i.e. ammonium and nitrate. All plants need some nitrogen, even tomatoes can suffer from nitrogen deficiency.

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