Commiserations on it falling down, as to growing back.they are tough as old boots even if their delicate flowers suggest otherwise. When we started ours it had a year in the ground before our alsation of the time 'ragged it' to a stump about a foot high..I thought it a gonner and dragged it out with its rootball, threw it in a corner and forgot about it. The following year it sprouted again and I was forced to find it its present position on the side of the house, the stump produced 5 new shoots and it now covers the walll entirely (8yrs on), apart from a bag of muck in its planting hole 3ftx1ft it has never been fed any type of fertiliser, it produces more and more blooms every year too...and the scent , well it is to my nose and mind sublime!