Posted: 23/06/2016 at 17:29
What I have been trying to say, and this is backed up by the article from international Clematis Society, is that the reason that clematis like their roots in shade is for water content, nothing to do with temperature. Not ' they like their roots cool !! '
The late Dr. John Howells, in his book ' Trouble free clematis, the viticellas ', says that a mature clematis needs 4 gallons of water per week, In hot conditions 1 gallon per day.
I asked the late Vince Denny, at his clematis nursery in nearby Preston many years ago, what did he feed his clematis with ? He pointed to the tap on the wall.
I have the National Collection of Clematis Viticellas in the garden here, do I water them ? Yes. Do I feed them ? No.
Clematis growing in large terracotta pots I have plenty, these I feed with 3.1.6 soluble fertiliser.
I have a clematis nursery, they are my bread and butter, it is best to share knowledge about clematis culture, we all learn daily.