Light Needs
Mature Height
Mature Spread
Growing Zones
Rhododendron ‘Amagasa’ is an extremely floriferous shrub with eye-catching spring color! Its clusters of classic azalea flowers are bright coral with deeper orange flecks. Growing just 3-4 feet tall and wide, Amagasa Azalea is ideal for small gardens. Its upright growth habit and shiny, evergreen leaves add structural, year-round interest.
Amagasa Azalea is a slow-growing and long-lived shrub. It makes a stunning specimen plant due to its showy flowers and glossy leaves. This shrub lends itself well to mixed borders and foundation plantings, creating an attractive backdrop to shorter perennials. It is compact enough to grow in front of taller trees and shrubs in a layered planting. Amagasa Azalea also looks marvelous when grown in mass plantings or as a low-growing hedge.
Amagasa Azalea Care
Plant Amagasa Azalea in moist, well-drained soil. Amagasa Azalea needs acidic soil to prevent chlorosis—the yellowing of leaves—caused by nutrient deficiencies. If your soil is too alkaline, amend it with acidifying products such as aluminum sulfate. Incorporating compost into the soil will also help this shrub thrive. In spring, fertilize your azalea with a slow-release fertilizer formulated for acidic-loving plants. Keep Amagasa Azalea consistently watered during its first year after planting. Mulching will help retain soil moisture and insulate the roots through winter. Amagasa Azalea can be grown in full sun to partial shade, and appreciates afternoon shade in hot climates.
As a low-maintenance plant, Amagasa Azalea will not need routine pruning. However, overlapping and dead branches can be removed to increase air circulation. Azaleas can also be pruned to about a foot from the ground for height control. Prune after the flowers have faded in spring to ensure you do not accidentally snip off any developing flower buds.
Amagasa Azalea Spacing
Amagasa Azalea can be spaced 4-6 feet apart. If using this shrub for mass plantings, a spacing of about 4 feet apart works best for a fuller look.
Amagasa Azalea Plant Facts
Growing Conditions
- Hardiness ZonesGrowing Zones
- USDA Zones 6 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
- Part Sun to Full Sun (5+ Hours Direct Sun)
- Mature Height
- 3 Feet
- Mature Spread
- 4 Feet
- Growth Rate
- Slow
- Growth Habit
- , Spreading, Upright
- Water Needs
- Consistently Moist
Flowers & Foliage
- Flower Colors
- , Orange, Red
- Flower Description
- Coral blooms with red flecks
- Bloom Time
- Mid-Spring
- Blooms On
-
Old Wood
?
"Blooms on" tells you which stems produce flowers, which decides when it's safe to prune.
- New Wood: Flowers form on stems that grow this season. Prune in late winter or early spring without losing blooms.
- Old Wood: Flower buds form on last year's stems. Prune right after flowering. Pruning in fall or early spring removes next year's blooms.
- Both New and Old Wood: Blooms on last year's stems and again on new growth, so it flowers even after a hard winter or a mistimed pruning. Prune lightly after the first flush of blooms.
- When to Prune
- Right after flowering
- Foliage Color
- , Green
- Foliage Description
- Green
- Foliage Type
- , Evergreen
- Seasonal Interest
- , Spring Flowering
Garden Benefits
Plant Overview
- Common Name
- Amagasa Azalea
- Also Known As
- Amagasa azalea
- Botanical Name
- Azalea 'Amagasa'
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
We stand behind our plants with industry-leading guarantees to give you peace of mind.
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!