Hi!

On the contrary, the more acidic the soil is, the bluer hydrangeas are. Adding aluminium sulfate to the ground is recommended. The following link explains why:

www.hydrangeashydrangeas.com/colorchange.html

www.hydrangeashydranges.com/color change.html

Hi,
Sorry for the delay in responding.
I suspect you could cut your hydrangeas back harshly, but the first year you won't have many flowers.
The other solution would be to transplant them somewhere else, where the size wouldn't be a problem. I transplanted many of mine and they are doing fine. Again, the first year after having been moved, they won't bloom too much, but the second year they should thrive.

Hi Sandra,

Spring, is be the best time to plant hydrangeas, more precisely when there is no more danger of frost. If you live in a Zone 8 climate, as I do, mid march is a good time to start. As for the soil, it all depends whether you want them blue or pink. An acidic soil will give you blue flowers, otherwise, they will be pink. Whatever the soil, white hydrangeas always remain white. I don't add any fertilizer or aluminum sulfate to my soil to have them blue. It's naturally rich and acid. One important thing: You need to water them daily in summer time.