Light Needs
Mature Height
Mature Spread
Growing Zones
- Partial Sun (5 - 6 Hours Of Direct Sunlight)
- Mature Height 4 - 6 Feet
- Mature Spread 4 - 5 Feet
- Growing Zones 7 - 9
Azalea flowers are always lovely, but there is something about pure white blooms that makes the HH Hume Azalea extra special. Also known as Rhododendron 'H.H. Hume’, this shrub boasts 2-inch wide flowers with a subtle yellow throat. Flowers bloom in the spring. This azalea is evergreen, so the shrub continues to provide color and visual interest throughout the rest of the year.
Use the HH Hume Azalea as an accent or create a low-maintenance foundation planting. Group several HH Hume Azaleas for an enchanting mass planting, or mix this cultivar with other types of azaleas for a colorful hedge. This beauty works well in a woodland- or cottage-themed mixed planting. The flowers attract pollinators, like bees and hummingbirds.
HH Hume Azalea Care
The HH Hume Azalea will brighten up a shady area that receives partial sun. Morning sun and afternoon shade are the ideal lighting conditions. Use rich, acidic, moist soil that promotes drainage. New plants need consistent water for the first growing season, while established plants like damp conditions that are not soggy or dry. Fertilize in the spring using a product intended for rhododendrons or acid-loving plants.
Azaleas set their flower buds in the summer or fall prior to spring blooming. Prune the HH Hume Azalea to maintain the shape after flowering is complete but before the new buds emerge. Apply a thick layer of mulch to protect the shallow roots from chilly winter weather.
HH Hume Azalea Spacing
The HH Hume Azalea grows 4 to 6 feet tall and 4 to 5 feet wide. Plant shrubs 4 to 5 feet apart to create a continuous hedge.
HH Hume Azalea Plant Facts
Growing Conditions
- Hardiness ZonesGrowing Zones
- USDA Zones 7 to 9 (perennial); grown as an annual elsewhere (outdoors year-round); grown indoors elsewhere (outdoors year-round); grown in containers elsewhere (grown as a seasonal crop)
- Sun Exposure
- Partial Sun (5-6 Hours Direct Sun)
- Mature Height
- 4-6 Feet
- Mature Spread
- 4-5 Feet
- Growth Rate
- Moderate
- Growth Habit
- , Spreading, Upright
- Water Needs
- Consistently Moist
Flowers & Foliage
- Flower Colors
- , White, Yellow
- Flower Description
- White with a subtle yellow center
- Bloom Time
- Mid-Spring
- Foliage Color
- , Green
- Foliage Description
- Green
- Foliage Type
- , Evergreen
- Seasonal Interest
- , Spring Flowering
Garden Benefits
Plant Overview
- Common Name
- HH Hume Azalea
- Also Known As
- HH Hume Azalea
- Botanical Name
- Azalea H.H. Hume
Simple Plant Spacing Calculator
Please Note: The pictures below are to give a general representation of the different container sizes. The actual size/ages of plants are estimates and will vary based on type of plant, time of year, last pruning & many other factors.
Also Known As:
Quart
Plant Age:
~ 6 months - 1 year
Plant Size:
~ 4"-8"
Pot Size:
~ 4.75"H x 4.5"W
Volume:
1.50 quarts
Also Known As:
2.5 Quart Pot
Plant Age:
~ 1 - 2 years old
Plant Size:
~ 8"-12"
Pot Size:
~ 6.5"H x 6.5"W
Volume:
2.20-2.30 quarts
Also Known As:
#1 Container
1 Gallon
Plant Age:
~ 1 - 2 years old
Plant Size:
~ 10"-14"
Pot Size:
~ 7"H x 7.75"W
Volume:
2.26-3.73 quarts
Also Known As:
#2 Container
2 Gallon
Plant Age:
~ 1.5 - 3 years old
Plant Size:
~ 12"-18"
Pot Size:
~ 9.5"H x 9.5"W
Volume:
1.19-1.76 gallons
Also Known As:
#3 Container
3 Gallon
Plant Age:
~ 2 - 4 years old
Plant Size:
~ 12"-30"
Pot Size:
~9.5"H x 11"W
Volume:
2.32-2.76 gallons
Also Known As:
#5 Container
5 Gallon
Plant Age:
~3-4 years old
Plant Size:
~ 20" - 60"
Pot Size:
~11" H x 10 1/2” W
Volume:
3.5 - 4 gallons
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We want your plants to arrive in great condition! If you notice any issues upon delivery, contact us within 3 days.
Starting January 1, 2026 all bushes, perennials & trees purchased come with an extended 1-year warranty for added confidence. If your plant dies due to a health issue within a year, we’ll make it right.
Plants that are currently in stock typically ship within 2-7 business days after your order is placed.
Plant Addicts ships to the lower 48 states within the U.S. Unfortunately, we do not currently ship to Alaska, Hawaii, or internationally.
This plant cannot be shipped to the following states: AK, HI. These restrictions apply only to this specific plant due to agricultural regulations or other limitations. Other plants may still be available for shipping to these states.
If you have any questions about shipping restrictions, feel free to reach out to our team!