"Stephen Henning" wrote in message
news
Van Veen Nursery in Portland, Oregon, reported after using coffee grinds
from Starbucks Coffee House for about 18 months that they were very
satisfied with the results. 1) it helps to aerate their clay soil. 2)
slugs don't like to go through. (So you can see they have both mixed in
and put on top.) It does help to make the soil more acidic. But it does
not replace fertilizer.

eh, claims about the nutrient content of coffee grounds varies but from a
scan of test results/claims the npk varies around 1-3N/0.5-1P/1-2K. This is
consistent with most animal manure. Manure itself is not classified as a
fertiliser as it has low nutrient values per weight however it is used by
many in gardens and they never touch a high nutrient fertiliser. I would
contend that coffee grounds CAN be used as a fertiliser if used on a regular
feeding cycle and if the plants are not greedy feeders. It may be alternated
with other fertilisers but should not be discounted as being totally
inappropriate to use as a fertiliser.

rob