Are you putting coffee ground in your Garden? Do whatever you want to do but I would suggest don't put coffee ground in your Garden.
As we all know gardening is the big investment that should contains daily watering, pest control should be used carefully and the last but not the least process of keeping the soil chemistry exact.
I would say there is nothing like eating vegetables you grow in your Garden. As we all know that now Internet is full of ways where you can make your gardening easier and a lot cheaper, but some of the methods are there that are too good to be true. No matter what information you get through blogs, leave the spent coffee ground all alone because these are bad news for our garden.
Common Grounds
As we feel good to do something with our coffee waste beside throwing it in garbage or bin. Most of the Gardners who tells that it's full of nutrients like nitrogen, which plays major role in plant growth. If we add organic material to the soil, bacteria will feed on it and break it down to the more number of nutrients that can plant use.
Now coming to the coffee ground gardening which includes few warning. According to gardeners, coffee ground are highly acidic and should be reserved for acidic loving plants like azaleas and blueberries. And if suppose your soil is already containing high nitrogen then this extra boost will stabilize the growth of fruits and flowers. And the one major problem is coffee grounds are full of caffeine.
That's not the real buzz you are looking for
In order to understand why caffeine is not good for your Garden, you must understand why some of the plants produce caffeine at very first place. You must be knowing that both coffee and chocolate are came from two different plants which are not even related also and both of them contain caffeine. There ability to produce caffeine is independent, even the biologists call this evolution as "convergent evolution." So the caffeine kills off any plants in the surrounding areas.
As per the study in Journal of Agricultural and Food Chemistry it was found that there can be up to 8 milligrams of caffeine per gram of used coffee grounds, that means if you brew a shot of espresso ground still contains as much caffeine as a cup of tea, so if you think you squeezed out every last drop of caffeine out of those grounds then I would suggest think again.
So that's why we won't suggest adding coffee grounds to our garden. Even in 2016 a study in the journal Urban Forestry & Urban Greening said "Applying spent coffee grounds directly to urban agriculture soils greatly reduces plant growth." that was truly said when they composted organic waste with coffee grounds and that was recommended by every experts at very first place. Another study verified that compost spiked with coffee grounds kills earthworms. Even we remembered that adding organic materials attracts helpful bacteria.
James Wong after doing informal gardening experiment with coffee grounds concluded that "I love a quirky piece of hort advice, and some are repeated so often you assume they are true, but often they call them old wives' tales for a reason." So I would say Drinking your coffee is well and good but keep those grounds away from your garden.
James Wong has mentioned more advice in his book called "Grow For Flavor: Tips and Tricks to Supercharge the Flavor of Homegrown Harvests." We would like to recommend you to read that book we think you may like it.
