What do you put into the soil to change colors of your hydrangea?

Lime for blue. Magnesium sulfate for pink. One is basic and one is acidic. Take your choice.

What do you put into the soil to change colors of your hydrangea?
If your hydrangia variety is "peegee" there is nothing you can do.





Use lime (acid)to turn the white ones blue; if you want pink you will need to make the soil a neutral ph.
Reply:ESPOMA QUICK SOLUTIONS THE ONE THAT IS CALLED SUPER PHOSPHATE....IT TURNS PINK TO BLUE...ETC....THEIR OTHER PRODUCT.... THEIR GARDEN SULPHUR CALLED ORGANIC SOLUTIONS IN THE FALL WILL PROMOTE THE ROOT GROWTH AND SIZE FOR THE FOLLOWING YEAR..... QUICK SOLUTIONS IS SOLD AT GARDEN CENTERS....5.99 PER 5 IB BAG......WORKS IN LESS THAN A WEEK ON OLD HYDRANGES ...CHANGED MINE FROM PALE PINK TO LOVELY SKY BLUE.
Reply:Just take LSD. It'll change the colour of your hydrangea, as well as everything else in the room.
Reply:With garden varieties, it's usually the acidity of the soil that dictates the colour. In acid soils, with a pH below 5.5, hydrangeas produce blue flowers, in alkaline soils, above pH7 they will be pink. In between you get some interesting (well, I think so) variations.
Reply:http://gardening.about.com/od/flowerings...
Reply:Add acidity to the soil to get a bluer color. Most garden centers should have an additive.