What a weird year this is being. Four bouts of snow and frost, two of them rather late in the spring: then the Beast from the East which blew most of the…
They will prefer a sunny position with humus-rich, well-drained soil. You should prune after the flowering, You can propagate from cuttings or by layering in late summer.
You can propagate from cuttings or by layering in late summer. Bench grafting in winter or by seed in autumn or spring. Plants produced from seed may not flower until some years old and often have poor flowers.