Slugs don't like coffee grounds, even used ones. Isn't there a Holly with lots of caffeine?
Brenda Groth wrote:what about using coffee grounds in compost?
Here's a little about holly in the US with caffeine.
Joel Hollingsworth wrote:
That looks like it would grow OK in my part of the US, but from the article, it doesn't sound particularly hardy.
What do mean by hardy? Resistant to cold?
rockguy wrote: I seem to recall an index on the old site that Dr Duke had up that lists all plants with a particular chemical. If I remember it right, caffeine is in a lot of plants, but they might all be tropical. I'll see if I can find it.
Coffee grounds are a nutritional additive for your soil. During the brewing process, most of the acidity is removed, leaving used grounds with with an average PH of 6.9 and a carbon-nitrogen of 20-to-1.