Plant field guide
Azalea (Gumpo White)
Dwarf spreading azalea with large, ruffled pure white flowers that bloom later than most azaleas, extending the season. Very low, mounding habit makes it an excellent ground cover or border plant.
Growing requirements
- Scientific name
- Rhododendron 'Gumpo White'
- Sun
- partial shade
- Water
- moderate
- Height
- 18 in (46 cm) – 30 in (76 cm)
- Spread
- 30 in (76 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: June, July.
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.
One of the latest blooming azaleas, flowering when most others are finished. Very compact and low-growing. Excellent under windows and in front of taller shrubs. Evergreen.
Pruning
Prune lightly after late spring bloom. Naturally compact - minimal pruning needed.
Fertilizer
Azalea/Rhododendron fertilizer (acidic)
After flowering
Mulch
2 inches of pine bark or pine straw.