Light Needs
Mature Height
Mature Spread
Growing Zones
Showy springtime flowers make the Firestorm Rhododendron a beautiful addition to almost any outdoor space. Large flowers measure up to 3.5 inches across and are a deep red. The flowers bloom in clusters, creating an impressive display, and the wavy petals add even more dimension to the already stunning shrub. Expect flowers by late May.
The dense, compact form of this shrub makes it a good choice for a flowering hedge or foundation planting. The lime green foliage has a leathery texture and stays in place all year, providing consistent color. The Firestorm Rhododendron grows in zones 4 through 8.
Firestorm Rhododendron Care
This shrub is easy to maintain, but it thrives in acidic soil. Naturally acidic soil is ideal, but you can amend more alkaline soil when planting and use an acidic fertilizer annually each spring. Rhododendrons prefer moist soil, but they do not like wet feet. Water regularly after planting until the root system is fully established; thereafter, water during a drought to keep the plant healthy and growing. Plant the Firestorm Rhododendron in partial shade to partial sun.
Remove dead or damaged branches at any time. Prune the plant to thin the growth or remove crossed branches immediately after the flowers fade. Rhododendrons set next year’s flower buds during the previous summer, so do not prune after the buds emerge. Plants in frigid climates will do best when wrapped in landscape fabric during major winter storms.
Firestorm Rhododendron Spacing
The Firestorm Rhododendron is compact and reaches 3 to 4 feet tall and wide. Space shrubs 3 feet apart to create a dense hedge or foundation planting. Display the Firestorm Rhododendron in a container at least one-third larger than the root ball.
Firestorm 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
- Part Shade to Full Sun (3+ Hours Direct Sun)
- Mature Height
- 3-4 Feet
- Mature Spread
- 3-4 Feet
- Growth Habit
- , Mounded
- Water Needs
- Average
Flowers & Foliage
- Flower Colors
- , Red
- Flower Description
- Red
- Bloom Time
- Mid-Spring
- Foliage Color
- , Green
- Foliage Description
- Green
- Foliage Type
- , Evergreen, Deciduous
- Seasonal Interest
- , Spring Flowering
Garden Benefits
Plant Overview
- Common Name
- Firestorm Rhododendron
- Also Known As
- Firestorm Rhododendron
- Botanical Name
- Rhododendron 'Firestorm'
- Plant Type
- Shrub
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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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!