Here in the Southern Appalachian region (USDA zones 6 and 7) rhododendrons can be challenging. Of critical importance is to choose a good garden spot and to plant a hardy cultivar. Over the past 25 years ‘Janet Blair’ has been one of the most reliable varieties in my Northeast Tennessee garden.
‘Janet Blair’ bears medium-sized light pink flower trusses. Individual flowers hold a frilled edge, a golden eye bronze center, and are light fragrantce. ‘Janet Blair’ grows vigorously and is very heat and drought tolerant, averaging six feet in height and spread after 10 years. It branches well, exhibiting a mounding growth habit with glossy green foliage.
Whether your garden soil is sand, silt, or clay, generously amend it prior to planting with peat moss and compost. The soil must be moderately acidic (pH below 5.8) and well drained. Mulching after planting aids in soil moisture retention, reduces weeds, and helps cool shallow rhododendron roots.
Like most rhodies, Janet Blair needs partial protection from harsh afternoon summer sun and drying winter winds. Irrigate newly planted rhododendrons during the first two summers to insure their long term survival. Pruning is rarely necessary and is best performed within one month after blossom fall. Removing spent flowers promotes new growth.
‘Janet Blair’ is a Dexter hybrid originated by David Leach.