How do I make my hydrangeas blue naturally?

How do I make my hydrangeas blue naturally?

You can check the answer of the people under the question at Quora “do coffee grounds make hydrangeas blue

0 thoughts on “How do I make my hydrangeas blue naturally?”

  1. To make hydrangeas blue naturally, you need to increase the acidity of your soil. An easy and free way to make the soil more acidic is to add coffee grounds to the soil. I haven’t tried this with hydrangeas, but my grandpa always gave his rhododendron plant coffee grounds, and it flourished. Starbucks often has grounds available that they will give you for free if you ask.
    I have also read that you can water the plants a few times with water containing vinegar (2 tablespoons of vinegar for every gallon of water). You could also put an inch or two of sphagnum peat on top of the soil.

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  2. Naturally? What does that mean? The color of Hydrangeas is determined by the acidity of the soil. I forgot which way is blue, but it’s on the internet. Just add either an acid or base to the soil.

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  3. As long as your Hydrangeas were blue to start with, all you have to do, is increase the soils acidity levels, you can do this by A) adding a product from your garden store called Hydrangea colourent, usually sold in a small plastic container, and usually 3 or 4 £. And if you cannot find this product, B) apply some sulphate of Iron, which is cheaper per gramme than the colourent, but you buy a bigger batch, follow the instructions exactly, with either product.

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