Plant field guide
Azalea (Encore Autumn Amethyst)
Part of the revolutionary Encore Azalea series that blooms three times per year. Rich purple flowers in spring, summer, and fall provide unmatched season-long color. Semi-evergreen with good cold hardiness.
Growing requirements
- Scientific name
- Rhododendron 'Conlec'
- Sun
- partial shade
- Water
- moderate
- Height
- 36 in (91 cm) – 48 in (122 cm)
- Spread
- 36 in (91 cm) – 48 in (122 cm)
- Spacing
- Not recorded
- Hardiness zones & minimum temperature
- USDA 6–9; average annual extreme minimum from -10°F (-23.3°C). Hardiness does not predict local frost dates.
- Difficulty
- easy
Planting & seasonal timing
Northern Hemisphere planting months: not yet verified in our database.
Northern Hemisphere pruning months: April, May.
For the Southern Hemisphere, these seasonal windows shift approximately six months. Check your local frost forecast, soil temperature, and species requirements; calendar months are not a guarantee of planting safety.
First reblooming azaleas. Patent-protected varieties. Need acidic, well-drained soil. More sun tolerant than traditional azaleas - blooms best with 4-6 hours sun.
Pruning
Prune lightly after spring bloom only. Avoid late-season pruning which removes fall flower buds.
Fertilizer
Azalea/Rhododendron fertilizer (acidic)
After spring bloom
Mulch
2-3 inches of pine bark or pine straw.