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.
- SKU:
- PER-IRS-SPJ-LGL
Container Sizes
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.
4.5" Pot
Also Known As:
4.5" Container
Plant Age:
~ 6 months
Plant Size:
~ 3"-6"
Pot Size:
~ 4.5"H x 3.75"W
Volume:
1.42 quarts
Quart Pot
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
2.5 Quart
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
#1 Pot
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
#2 Pot
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
#3 Pot
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
For more detailed information, please click here.
Plant Addicts Guarantee (Included On All Plant Orders)
Plant Addicts always guarantees your plant(s) will arrive happy & healthy. However, plant(s) are being shipped through the mail & sometimes accidents happen. If the plant is dead, has dried out roots or the incorrect item was shipped, just notify Plant Addicts within 3 days upon delivery. We may ask for pictures but will try to make it as easy as possible for you. Please note, plant(s) with damaged branches or wilted leaves will not qualify for this guarantee. Plants are very resilient and will rebound quickly when cared for correctly.
For more information on how to care for your new plants, please click on our guide below.
Guide: How to Care for Your New Plant(s)
Plant Addicts Warranty - 1 Year (Extra Purchase Required)
We encourage all plant lovers to purchase the Plant Addicts Warranty, whether you're a new gardener or an expert. There are many variables outside of anyone's control that can cause a plant to die. Hungry animals, drought, poor soil conditions, over watering, diseases & pests are all good examples of what can cause plants to die. The Plant Addicts Warranty is a 1 year warranty protecting you from all of the unknowns and will replace your plant if something were to happen to it.
The warranty is purchased on a per plant basis and must be purchased at the same time as the plant(s). We will cover 100% of the price of the plant, but the warranty does not cover shipping costs. SImply let us know if your plant has died within 1 year of receiving it and we will get you a new one shipped out as soon as possible (depending on the time of the year and availability). We may ask for photos for documentation purposes, but we try to make the process as easy as possible.
For more information, please click on our page below.
Plant Shipping
Below are some factors we consider when determining when to ship the plants depending on the timing of the order.
Winter to Early Spring
We ship only when it's warm enough to plant in your growing zone.
Sometimes plants aren't completely ready to sell and ship in early spring. We will wait until the plants are ready before shipping so you don't get a subpar product.
For Southern plants we will be able to ship much earlier than plants coming from our northern nursery.
Summer
If there is extreme heat we may delay shipping for a week or several weeks.
We review what areas the plants are traveling through as well as your location.
Fall into Winter
We’ll ship plants out all the way up to the end of the fall planting season!
Winter
Get your order in early to reserve your plants for Spring planting!
Once your plant is shipped you’ll receive an automated email with tracking information.
Click here for more detailed shipping information.
Planter Shipping
Standard Colors: 2-3 business days
Special Order Colors: 8 weeks - this is due to the planter being custom made with the color(s) of your choice
Please Note: On special orders there can not be any cancellations