Semi-double dark purple flowers, deeper and cooler than most azaleas offer, on a naturally rounded plant. Rhododendron 'Roblezd', sold as Encore Autumn Majesty®, grows 2 to 3 feet tall and wide in full sun to part sun, hardy from Zone 6 through Zone 10.
The compact even size suits a container, a foundation planting, or a matched pair flanking a door, and it holds its shape without pruning.
Encore azaleas can flower up to three times a year. A traditional azalea blooms for a couple of weeks in spring and then stops, while Encores set buds on new growth through the season and bloom again in summer and once more in fall. Spring and fall give the strongest shows, with the summer flush lighter and more scattered. They also take more sun than most azaleas.
Azaleas want acidic soil, roughly pH 4.5 to 6.0, with good drainage and steady moisture. Alkaline ground turns the leaves yellow. Mulch the shallow roots.