I planted this last year and made sure it was well fleeced and protected for the winter. Problem is the stems are now almost completely brown and the only green leaves are right near the soil and there's only a few of them now. Should I cutt it right back and hope for new growth or just see if it survives. I so want this plant to go up a trellis, as I love the scent. Mum's got one that grows like mad and I did not expect problems with mine!