Maintenance advice :
Just before flowering, you can find and cut down the non flowering branches , leaving just 2-3 buds. Shorten other less flowering branches, to just above a leaf bud, to rejuvenate. Pinch the young shoots (break off between fingers while soft, or cut off, to shorten by about a half), all along the branches, to help floral buds to develop the following year. Treat with anti-leaf curl, once leaves have fallen, to strengthen.