Thank you, I'll google it : ) There is always room for one more!
I have found since I posted this query that planting several actually helps.
I have also found they prefer to keep their roots cool, and I took this into account when planning where to put my extra plants.
My crop of berries has been much better this year. I think I was also impatient with some of my plants, forgetting that a healthy happy established plant will produce a better crop than one concentrating on growing and developing a good rootball.
Next season's job, to rid my poor camellias of botrytis!
