I have pink Hydrangeas and I wish to change them to blue. What PH level of acidity should the soil be?

What should the PH level of the soil constantly be, if I want blue Hydrangeas? Do I have to water the plant everyday with the right PH level in the water? How long do I have to continue with this watering routine? Currently, I have many Hydrangea plants ranging from light powder pink to dark pink to light purple, to dark purple.

I have pink Hydrangeas and I wish to change them to blue. What PH level of acidity should the soil be?
Actually, instead of worrying about the pH in your water, it is much simpler to amend your soil to change the color of the hydrangea blossom.


So if they are pink now, and you want them to be blue, add gypsum, sulphur or peat moss to create a more acidic environment (lower the pH).


"The flower color of big leaf hydrangea (Hydrangea Macrophilla) can be controlled by altering the soil pH. Blue flower color is produced by an acid soil condition (pH less then 6.5), while pink flower results from an alkaline soil condition (ph greater than 7.0)."


You can raise the pH with oyster shells, lime or wood ash.


Happy Gardening!


(Your hydrangeas sound lovely!)
Reply:I read once to change the color of hydrangeas, put a rusty nail or two in the dirt near the base of the plant (not in the plant).
Reply:Try chemo therapy or radio therapy.


%26amp; for ur soil above 11 ph
Reply:Not too acidic. Use kitchen waste as compost. Yes it does have to be constantly acidic.