What's your question? Ask


Q.Used coffee grounds as fertilizer

Zone Wellford, SC 29385 | Sue Repsher added on April 14, 2017 | Answered

I do have some azaleas and roses which I understand can benefit from adding used coffee grounds as fertilizer…. I have a ready supply of grounds, but am not clear about what is meant by “washed grounds” have a neutral pH. Are the used grounds that come out of the coffeemaker “as is” considered washed & neutral, or the more acidic?

Also, I can’t find any info about how often to apply the grounds, or how much…. Can you help with that?!

Thanks very much for your help!

A.Answers to this queston: Add Answer
Answered on April 15, 2017

Here is a link to an article on this subject for you: https://www.gardeningknowhow.com/composting/ingredients/coffee-grounds-gardening.htm I always advise folks to add amendments to the soils gradually. Too much all at once and the pH gets thrown off and the shrub or plant will react badly, sometimes leading to its death. Roses will do fine with them but I would recommend using only 1/4 cup per rosebush on a monthly or every two months basis. If they tolerate that well, try making it 1/3 cup for a bit and see how things go.

Was this answer useful?

Log in or sign up to help answer this question.

Did you find this helpful? Share it with your friends!

You must be logged into your account to answer a question.

If you don't have an account sign up for an account now.

Looking for more?
here are more questions about...
Join Us - Sign up to get all the latest gardening tips!

Do you know a lot about gardening?
Become a GKH Gardening Expert