Auburn Azalea 'Corley's Cardinal' (Azalea calendulaceum × 'Corley's Cardinal') brings bold seasonal interest to your landscape as a large deciduous azalea with an upright, open habit. You can use it as a specimen shrub, a loose screen, or to anchor a woodland edge where you want spring flowers and summer greenery without the year-round density of evergreens.
For best performance, give your plant evenly moist, well-drained soil that stays on the acidic side. You will get the strongest growth when you add organic matter at planting time and keep a 2-3 inch mulch layer over the root zone to conserve moisture and protect shallow roots. Water deeply during dry spells, especially in the first couple of seasons while the plant establishes.
Place it where it receives full sun to part shade. In hotter climates, afternoon shade can help reduce stress and keep foliage looking its best, while a bit more sun generally improves flower display. Provide good air circulation and avoid planting too deeply; set the root flare slightly high and let mulch taper away from the stems.
Maintenance is straightforward. If you prune, do it right after flowering so you do not remove next year's buds. Remove dead or crossing branches as needed, and refresh mulch annually. With the right site and steady moisture, this deciduous azalea can become a long-lived, reliable shrub in your garden.