Charlie - 3002 Thursday, 30 April 2020
I think that one is past redemption. Have a careful look at it to see if you can see signs of insect infestation or nutrition problems. Refurbish the soil and plant something different there. If the foliage on the remaining piece looks healthy you could try taking cuttings. Azaleas like cool moist conditions in acid soil and usually part shade. Could lawn fertiliser be a problem in that position?