Ask a Question forum→Epsom salt and/or Coffee Grounds for Gardenia and Hydrangea

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Wortham Tx
May 27, 2018 7:27 AM CST
Can I use Espom salt and or coffee grounds in my gardina plant it's in a large container. If so how much and how often? Also the same question for my hydrangea bush except it's in the ground. I live in Wortham Tx. Thanks so much. The gardina is in a container outside.
Name: Sue
Ontario, Canada (Zone 4a)
Daylilies Birds Enjoys or suffers cold winters Native Plants and Wildflowers Butterflies Annuals
Region: Canadian Keeps Horses Dog Lover Plant Identifier Garden Sages
May 27, 2018 7:45 AM CST

You can use either if the plant is deficient in something that either contains. Do you have a reason to believe that the plant has a magnesium deficiency (the reason for using Epsom salts)? Coffee grounds will not likely make the soil more acidic if that is what you are hoping, and in a container I would be careful not to use too much of it.
Name: Philip Becker
Fresno California (Zone 8a)
May 27, 2018 10:50 AM CST
Yes, you can use both !!!
For my soil, most everything does better with regular applications of Epsom salts.
Follow directions on epsom salts lable.

Coffee grounds. You can't hardly overdo.

Good day ! I tip my hat to you. !
Anything i say, could be misrepresented, or wrong.
Name: Will Creed
Prof. plant consultant & educator
May 27, 2018 10:58 AM CST
I agree with Sue that it is important to first determine if and what nutrients are lacking before adding anything. If your plants are doing well, then an occasional application of a complete fertilizer is warranted. Too much of any nutrient can cause damage.
Will Creed
Horticultural Help, NYC
Contact me directly at [email protected]
I now have a book available on indoor plant care

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