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May 1, 2020 7:57 AM CST
Connecticut
I have been searching online and I found out that used coffee grounds can be used to provide aeration in the potted soil. You just blend a mix and add a maximum of 25% coffee grounds. I am aware that the coffee grounds can be somehow a bit acidic, but it seems like herbs such as Basil thrives in these conditions Has anyone tried this? And if so, does that plant thrive in those conditions? Has anyone tested to use coffee grounds overall? Rolling my eyes.
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May 1, 2020 8:22 AM CST
Name: Arlene
Southold, Long Island, NY (Zone 7a)
Region: Ukraine Dahlias I was one of the first 300 contributors to the plant database! Houseplants Tomato Heads Garden Ideas: Level 1
Plant Identifier Photo Contest Winner: 2014 Million Pollinator Garden Challenge Celebrating Gardening: 2015
Welcome to NGA, @Juicemannen.

Coffee grounds have long been part of our six compost bins. They help with aeration and are said to deter slugs. My used coffee grounds do not show them to be more neutral than acidic, using three different pH meters.

Thumb of 2020-05-01/pirl/ce673e

Found this online:
Many people feel that coffee grounds lower the pH (or raise the acid level) of soil, which is good for acid loving plants. But this is only true for unwashed coffee grounds. "Fresh coffee grounds are acidic. Used coffee grounds are neutral." If you rinse your used coffee grounds, they will have a near neutral pH of 6.5 and will not affect the acid levels of the soil. To use coffee grounds as fertilizer, work the coffee grounds into the soil around your plants. Leftover diluted coffee works well like this too.
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May 1, 2020 8:46 PM CST
Name: Kat
Magnolia, Tx (Zone 9a)
Container Gardener Region: Texas Winter Sowing Herbs Moon Gardener Enjoys or suffers hot summers
Heirlooms Vegetable Grower Bookworm
NJ? coffee grounds in pots? I would be afraid of having too many earthworms in that pot, but coffee grounds are good for all sorts of planting applications. Basil has a long tap root, give it a deep pot with room to let that tap root grow, and why do your pots need aeration? You use potting soil in them? It could stay too wet and not drain well with potting soil.
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