Robust and upright with deep green foliage Autumn Lily produces large single form white blooms with occasional purple stripes. Its strong growth and profuse blooms make Autumn Lily perfect for mass and foundation plantings. This is one of the most cold-hardy Encore Azalea varieties able to thrive down to USDA zone 6a. Lily is one of the larger Encore Azaleas reaching a mature size of 4.5ft H x 4ft W. Pick a location in your landscape for this Azalea that will receive 4-6 hours of direct sunlight, then dig the hole twice as wide as the container your plant arrived in and mix in a well-drained slightly acidic garden soil. Fertilize your Encore Azaleas every spring with a slow release acidic fertilizer to keep the blooms coming all season long!