I'd recommend getting it back to healthy before planting in the ground. It would appear to be in a wide but fairly shallow container, which isn't appropriate for this plant - transplant into a pot thats deeper than it is wide, an ordinary pot, probably one that's around 6-7 inches deep, using that ericaceous compost in that bag on display in the picture. Water thoroughly, till the water pours out of the bottom of the pot. Now stand the pot somewhere sheltered and only partially sunny - at this time of year, a bit of sun isn't a big deal, but as yours is sick, being kept out of hot midday sun would be a good idea. Water the pot when the surface of the compost is just dry to the touch, but not shrunken from the sides of the pot, and water well when you do, not just a quick slosh. If you stand the pot in an outer tray or container, empty that 30 minutes after you've watered - you don't want the roots sitting in water.

Continue this treatment, checking whether roots are hanging out the bottom of the pot by, say, June or July - if they are, pot up into something larger, and continue caring for it until end October - if its recovered, plant out in a prepared, dug over area, where you can be sure the plant will not receive early morning sunlight in winter - sunlight hitting frosted flower buds means the buds will fall off. Sunlight past about 11 am is fine, any frost should have had enough time to dissipate by then.

Thank you for your reply will try this up date you later in year

Thanks - fingers crossed it's not too late...

Hi, it also looks to me as if there are 2 plants together, I think I would take the plant/s out of the pot, and give a really good soak, then try to gently pull them apart, you may find you have 2 to plant, and when you plant them, fill the pot to within about 1" from the top, Derek.