Posted: 19/01/2014 at 11:41
I do it this way. Now or during next few weeks in cold areas I remove the old spent flowerheads down to the next emerging buds....usually in pairs. Really deadheading.
I also remove one or two old branches to the ground occasionally......Red, yours won't need this.
In a pot water it often and well during the growing season. I would actually place a saucer under the pot. I would leave well alone for a while re feeding. I would do this when deadheading.
Anyone growing the new breed of hydrangeas?