Tomatoes - Knowledgebase Question

Lexington, NC
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Question by cfugate
May 10, 2007
I have been told that putting coffee grounds around your tomatoe plants that it would make them grow. I would like to know what nutrients are in coffee grounds, and what other types of vegetables might be helped by them.

Answer from NGA
May 10, 2007
Studies have shown the effective role that spent coffee grounds can have in a garden as a fertilizer. Due to its high nitrogen content, spent coffee grounds contain properties that is excellent in plant health. As nitrogen is a crucial component of DNA, RNA, and proteins that plants need to build themselves, coffee is becoming increasingly used as a fertilizer. Additionally, recent studies have shown that spent coffee grounds also contain potassium, phosphorous, and other trace elements that only assist the development process for a plant. It is particularly effective for roses, as many gardeners swear that roses love coffee grounds as a fertilizer.

If you are interested in obtaining spent coffee grounds to use as a fertilizer, it's actually easier than you probably thought to obtain. Most local coffee shops will provide coffee grounds for a small price or for free. Large coffee shop chains tend to have a policy of composting coffee grounds, but often give them away to those who ask.

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