
Light Needs

Mature Height

Mature Spread

Growing Zones
Bring gallery-worthy color to damp, sunny spots. Cascade Spice Japanese Iris unfurls oversized, ruffled petals in vivid purple and crisp white, creating a dramatic, painterly contrast on tall, elegant stems. Swordlike foliage adds vertical structure before and after bloom, so beds look designed even between flower flushes.
This moisture-loving perennial shines at pond edges, in rain gardens, and anywhere the soil stays evenly damp. Plant a small drift for a “watercolor wash” effect, or cut a few stems for striking indoor arrangements that hold their form.
Cascade Spice Japanese Iris Care
Give 6 or more hours of direct sun daily; in hot-summer regions, offer light afternoon shade to protect color and foliage. Plant in rich, organic soil that is consistently moist but not stagnant; target a slightly acidic pH of 5.5–6.5. Water to keep the root zone evenly damp from spring through bloom; do not allow soil to dry out.
Mulch 2–3 inches to hold moisture and cool roots, keeping mulch off the crown. Feed in early spring with an acid-loving, slow-release fertilizer or a light compost top-dress, then lightly again after bloom. Deadhead for tidiness; cut foliage back to a few inches after frost.
In water features, sink a container so water sits at or up to 1 inch above the soil during the growing season, then remove from standing water before winter in cold climates. Hardy in USDA zones 4–9.
Cascade Spice Japanese Iris Spacing
For a single specimen, allow an 18–24 inch circle. For a dramatic border or pond-edge ribbon, set plants 12–18 inches on center so clumps knit without overcrowding. Keep at least 18 inches from paths to accommodate upright fans and bloom spread.
In containers, use a 12–16 inch wide pot at least 10–12 inches deep with drainage; set the pot inside a watertight sleeve or on a shallow pond shelf to maintain even moisture.
Why Grow Cascade Spice Japanese Iris?
- Oversized, ruffled blooms in bold purple and white for a high-contrast display
- Thrives in consistently moist sites—ideal for rain gardens and pond margins
- Strong, upright stems perfect for cutting and arranging
- Attracts pollinators while adding refined, architectural foliage
- Low-maintenance routine with simple dividing every few years
Plant Cascade Spice Japanese Iris where the soil stays moist and the sun is generous, and enjoy an unforgettable splash of color each early to midsummer. It delivers show-stopping flowers and clean structure with refreshingly easy care.
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, 2025 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: AZ, OR, 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!