Light Needs
Mature Height
Mature Spread
Growing Zones
The Capistrano Rhododendron is a dense plant with a rounded form that adds color and warmth to a garden space. This broadleaf perennial has glossy deep green foliage. Large buds grow on strong, woody branches and open in late spring to reveal frilly soft yellow flowers. Each flower truss will have multiple blooms, creating a rounded orb of flowers. Rhododendrons are beautiful shrubs that are easy to maintain.
Plant this charming beauty in a bed, border, or mass planting. Rhododendrons have an upright, branching growth habit, and since this plant retains its foliage throughout the year, it is an excellent choice for a natural fence or screen and will provide some privacy. Pollinators will visit the showy flowers for added convenience. The hardy Capistrano Rhododendron grows as a perennial in USDA zones 5 through 8.
Capistrano Rhododendron Care
Plant the Capistrano Rhododendron in well-draining, acidic soil in full shade. This shrub has a shallow root system, so frequent waterings are necessary. Established plants will not need to be watered as often but drench the soil during a drought to help the plant thrive.
Lightly fertilize newly planted Rhododendron in the spring and after the flowers die back. Established plants can be fed once each spring using a balanced fertilizer. This plant has a very pleasing natural shape, and pruning is not generally needed, but shape the plant as necessary after the flowers fade.
Capistrano Rhododendron Spacing
This broadleaf evergreen will grow 6 to 8 feet tall and wide. Plants can be grown 4 to 6 feet apart to create a border or mass planting.
Capistrano Rhododendron Plant Facts
Growing Conditions
- Hardiness ZonesGrowing Zones
- USDA Zones 5 to 8 (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
- Full Shade to Part Sun (0-6 Hours Direct Sun)
- Mature Height
- 6-8 Feet
- Mature Spread
- 6-8 Feet
- Growth Habit
- , Upright
- Water Needs
- Consistently Moist
Flowers & Foliage
- Flower Colors
- , Yellow
- Flower Description
- Yellow
- 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
- Capistrano Rhododendron
- Botanical Name
- RHODODENDRON 'CAPISTRANO'
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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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.
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