One of my rhododendrons has brown spotted leaves and buds. It was fine last year, but this year it just seemed to wilt after the winter (which was unseasonably cold here in Abbotsford BC). Are my Rhodos affected by the cold and just frost bitten? Or have they succumbed to some other disease that I am unaware of. As you can see by the picture, the Rhodo on the right (mine) are ill, the rhodo on the left are fine (my neighbors). Also, see the close-up. There are some new shoots from the base of the plant which is a good sign. What is wrong here? Will my rhodo be leafless all season? Any ideas? Please see attachments.