Posted: 11/08/2015 at 18:07
Hiya supernoodle, just noticed your post
your soil must be around the acid side of neutral judging by what you already grow. Prob 6 on ph scale I would guess.
i don't know Charming White but there are masses of hybrids and crossed names of hebes now. However, they are all similar in their requirements
sunshine,,good drainage and freedom from overcrowding by other plants is how I determine how I grow mine. The dome shaped ones especially look awful if a bigger adjacent plant sprawls over it so a nice "tidy" keep to itself plant as a neighbour. A trim every year in spring to maintain its shape and density and very little by way of feeding. My soil is free draining wherever I would plant it but hebes resent heavy wet winter soils.
I have taken cuttings but not often and not recently. Never much cutting material as they are slow growing but a healthy shoot of 2" or so in a 50/50 mixture of mpc and perlite should root well