coffee grounds

[alf500series]

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.

[Smallaxe]

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.

[Rtom45]

Coffee grounds are used to acidify the soil, I doubt that they have any value as a fertilizer.

[mark123]

Coffee grounds: 1.99N .36P .67K
(according to "Building a Healty Lawn: a safe and natural approach" by Stuart Franklin p. 68)

[gunsnroses]

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

[RigglePLC]

Guys got pithed--made the coffee taste awful.

[Patriot Services]

Originally Posted by RigglePLC

Guys got pithed--made the coffee taste awful.

Coffee in the cup. Fertilizer in the sprayer. Stop using the guys coolers to mix in.

[Think Green]

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.