Why Does Coffee Make Plants Grow Better?

Question

i am doing a science experiment and i need an answer

Answer 1

I'm a composter, myself. From a sustainability website:

Coffee by-products can be used in the garden and farm as follows:

Sprinkle used grounds around plants before rain or watering, for a slow-release nitrogen.
Add to compost piles to increase nitrogen balance. Coffee filters and tea bags break down rapidly during composting.
Dilute with water for a gentle, fast-acting liquid fertilizer. Use about a half-pound can of wet grounds in a five-gallon bucket of water; let sit outdoors to achieve ambient temperature.
Mix into soil for houseplants or new vegetable beds.
Encircle the base of the plant with a coffee and eggshell barrier to repel pests.
If you are into vermi-posting, feed a little bit to your worms."

Answer 2

Well...
Coffee doesn't actually make the plants grow better, but it does start a sort of chain reaction. Coffee is a soil acidifier. As the soil pH moves toward acidity, more nutrients in the soil become "freed" so that the plants in the soil can absorb those nutrients (mostly micro-nutrients). There may or may not be nitrogen available from the coffee grounds, I'm not sure, but several answerer's have thought so. Coffee grounds will also decompose, adding organic material to the soil, which is also beneficial. Using the grounds this way also takes up less room in landfills and is an excellent way to recycle... if you don't want to add it to your soil directly, definitely throw it into your compost pile.

It is probably the most effective used with potted plants, in the garden it's affects are diminished because of the area, the benefits are quickly diluted into the surrounding soil. In a pot or container, they are well, contained.

You owe me a quarter for helping you with your homework. But I always try to help out a boy in distress.

Good luck

Answer 3

Used coffee grounds contain nitrogen. You can mix it with the soil as a supplement.

Not only that but coffee grounds supposedly deters some bugs and attracts worms which is a definite plus.

If you'd like to do a science experiment and need used coffee grounds, Starbucks is a good place to visit and ask for some. It's free. In fact, they promote it: http://www.starbucks.com/aboutus/compost.asp

Answer 4

Not coffee so much as coffee grounds. Lightly dig into the soil around your plants or add to compost. Plants like coffee grounds because of the high nitrogen content. This is a great way to recycle used coffee grounds rather than just throw them away.

Answer 5

I Dont No= But I Heard Coffee Grounds Helps Them.

Answer 6

Ha never heard that, You know what might really work good is if you dumped some of your high speed internet connection into the water I bet they would sprout like mad.

Answer 7

Caffeine stimulates the photosynthesis and re-energizes the cell growth faster

Answer 8

It adds nutrients to the soil and so does egg shells

Answer 9

My Aunt always put coffee grounds in her gardens and they were beautiful.

Answer 10

caffeine stimulates the roots.