I got a gift of this beautiful shrub. It hasn’t thrived at all. I started gardening in April of this year. The flowers are beside a beautiful wall of an old walled garden. I am aware that years ago this area had glass houses and in places there may be old foundations. I have cared for and encouraged the shrub but to no avail. My friend has been able to cut hers as cut flowers. I hope you will be able to help me and I would appreciate same.
Lift the whole plant carefully and plant it in a spot with more space and add some organic material such as well-rotted compost.
Give it more space and water it a few times during the early summer next year if there are any dry spells.