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Does anyone use coffee grounds or tea bags for hydrangeas? I assume they would cause the soil to be acidic so would produce blue flowers, am I correct? Will tea bags decompose or do they all have to be opened? I have heard of people using coffee grounds for roses but never for other plants.
You can certainly use those as amendments if you want, any organic material is always good for plants. But at least in the case of coffee (and I suspect it would be the same for tea) most of the acidity comes out during the brewing process, so if you currently have alkaline soil and pink blooms, you're not going to get blue from using coffee grounds.
Thanks Bookreader, I have an endless summer, so I am going to apply
the epsoma. Maybe I will get some blue as you said on my old growth.
I am also happy to have the pink for now. I suppose if it wern't for all the kind members of DG my plant would be dead. thanks again
I just posted a thread about the Color Me Blue product from the ES folks. Have you heard of this product or it's success? Like I mentioned in the thread, I have heard horror stories about Aluminum sulphate burning up the root system. And I don't want to kill my new Twist and Shout hydr. - I haven't planted it yet. thanks for any info.