Light Needs
Mature Height
Mature Spread
Growing Zones
Volcano Plum Garden Phlox is a high-performing phlox variety with a dense and vigorous form. It puts out masses of fragrant rosy flowers in the summer, which are perfect for cutting. The flower stems are sturdy and never flop under the weight of all those blooms. The medium green pointed leaves look lush and full all summer. This variety stays fairly compact at 24 - 30 inches high.
Volcano Plum is an upright perennial with multiple branches and a spreading habit. This strain will develop drought tolerance and is resistant to powdery mildew, which is a major improvement over the species plant. Plant them in groups to add a wave of color to a perennial bed, hillside, or foundation planting. Mix them with other warm-toned flowering perennials for a beautiful sunset color scheme. They also look fabulous as the ‘thriller’ in mixed container plantings.
Volcano® Plum Garden Phlox Care
This phlox performs best in full sun, but will tolerate partial shade. It adapts to a range of soil conditions, including sandy, clay, and dry soils; note that it does not tolerate standing water. Volcano Plum can withstand drought conditions but looks its best in evenly moist soil over the summer. It is also more tolerant of heat than the species plant, but appreciates some shade in hot climates. Fertilize in spring with an all-purpose formula to boost blooming over the summer.
Cut back the foliage in late fall or winter before new growth emerges in spring. This plant does not require deadheading.
Volcano® Plum Garden Phlox Spacing
If planting in groups, space Volcano Plum approximately 20 inches apart, which will provide good air circulation. Grow them in containers at least 18 inches in diameter, and size up the container every spring to accommodate the spreading rootball.
Volcano® Plum Garden Phlox Plant Facts
Growing Conditions
- Hardiness ZonesGrowing Zones
- USDA Zones 4 to 10 (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
- 2 Feet
- Mature Spread
- 2 Feet
- Growth Habit
- , Spreading, Upright
- Water Needs
- Average
Flowers & Foliage
- Flower Colors
- , Purple
- Flower Description
- Purple
- Bloom Time
- Summer to Fall
- Foliage Color
- , Green
- Foliage Description
- Green
- Foliage Type
- , Herbaceous
- Seasonal Interest
- , Summer Flowering
Garden Benefits
Plant Overview
- Common Name
- Volcano® Plum Garden Phlox
- Botanical Name
- PHLOX 'VOLCANO PLUM'
- Brand
- Volcano Phlox
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!