Azaleas: Spring Explosions of Color
Rhododendron spp.
Azaleas erupt in spring color that stops traffic. Evergreen types dominate southern gardens; deciduous natives thrive in colder zones. The key is acidic soil — test before planting and amend if needed.
Sun
Part shade
Water
Moderate
Hardiness zones
5–9
Height
2–10 ft
Bloom time
Mid-spring
Care & Growing Tips
Plant in acidic (pH 4.5–6), well-drained soil with morning sun and afternoon shade. Mulch to keep roots cool and moist. Prune immediately after flowering — next year's buds form by mid-summer. Encore series reblooms in fall.
Companion Plants
Design your azalea garden
See azalea in your own yard before you plant. Upload a photo to Arden and visualize complete garden designs featuring azalea alongside companion plants.
Frequently Asked Questions
Q1 Why are my azalea leaves yellow?
Usually iron deficiency from alkaline soil. Test soil pH — if above 6, amend with soil sulfur or use a fertilizer formulated for acid-loving plants.
Q2 When should I prune azaleas?
Immediately after flowering — next year's buds form by mid-summer. Any pruning after July removes flower buds. Light shaping is all most azaleas need; heavy pruning should be reserved for rejuvenating overgrown plants.
Q3 Will Encore azaleas really bloom twice a year?
Yes — Encore series rebloom in summer and fall after the spring show. Need at least 6 hours of sun for reliable repeat bloom (more than traditional azaleas). In shadier spots they'll still flower in spring but not rebloom.