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Old 09-05-2010, 02:30 PM
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alf500series alf500series is offline
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coffee grounds

has anybody tried adding coffee grounds into their fertilizer, or using straight grinds as a fertilizer? I've done a little investigating on it but haven't really found out what % of nitrogen it releases and at what rate.

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Old 09-06-2010, 10:01 AM
Smallaxe Smallaxe is offline
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I use it in my garden, but I wouldn't use it on other folks' lawn as a source of N. Organic ferts have to 'break down' to make nutrients available. Compost is the thing to do.
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Old 09-16-2010, 07:15 AM
Rtom45 Rtom45 is offline
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Coffee grounds are used to acidify the soil, I doubt that they have any value as a fertilizer.
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Old 09-16-2010, 07:36 AM
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mark123 mark123 is offline
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Coffee grounds: 1.99N .36P .67K
(according to "Building a Healty Lawn: a safe and natural approach" by Stuart Franklin p. 68)
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Old 09-16-2010, 08:14 AM
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gunsnroses gunsnroses is offline
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I believe the biggie in coffee grounds is magnesium. I would bet magnesium is the one most noticed visually (plant color) after it is applied. Mark is spot on though
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Old 09-16-2010, 04:05 PM
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RigglePLC RigglePLC is online now
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Guys got pithed--made the coffee taste awful.
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Old 09-16-2010, 05:53 PM
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Patriot Services Patriot Services is online now
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Quote:
Originally Posted by RigglePLC View Post
Guys got pithed--made the coffee taste awful.
Coffee in the cup. Fertilizer in the sprayer. Stop using the guys coolers to mix in.
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Old 09-17-2010, 10:32 PM
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Think Green Think Green is offline
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Coffee grounds contain --Sulfur, Calcium, Phosphorus, Potassium, Magnesium and Nitrogen. Nitrogen in a slow release form.
I have a restaurant give me at least 60 used pouches a week from their coffee area. I break out the grounds and mix the contents with my soils for potting.
The grounds are acidic in nature and often used for acid loving plants and shrubs only.
Once the grounds go through the percolator, I don't think there is much benefit left to the grounds other than a natural soil conditioning agent. Fresh grounds will slowly release the nutrients above once water and natural bacterias in the soil go to work.
With the different blends of coffees, I would do some test plots of your own.
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