Cassa Blue Flax Lily

As low as $159.79 was $169.99
Availability: In stock

Lush, Cool-Toned Accent Cassa Blue Flax Lily

  • Strappy, Steely Blue-Green Foliage
  • Attractive Blue-Violet Blooms
  • One of the Most Floriferous Flax Lilies
  • Supports Butterflies and Beneficial Pollinators
  • Use in Containers or in the Ground
  • Clump-Form Stays Put Without Spreading
  • Durable and Easy to Grow
  • Full Sun or Partial Shade
  • Waterwise Once Established
  • Tolerates Coastal Conditions and Salt Exposure
  • Can Remain Evergreen in Some Climates
  • Versatile in the Landscape
  • Deer Don't Prefer the Taste

Add an oasis in your landscape with help from these impeccable, wide-bladed perennials. Cool things down with a lavish mass planting of restful, powdery blue-green...or show off their blue blooms in a low border.

Nature Hills works with professional garden designers across the country, and we're thrilled to offer Cassa Blue Flax Lily (Dianella caerulea 'DBB03'). While small and compact in stature, you'll gain plenty of visual interest from this Australian native.

Plant them in containers or in the ground throughout the high-profile areas of your yard. Cassa Blue Flax Lily is well-behaved and incredibly durable with a glaucous coating on its lustrous leaves.

When it's hot outside, you'll definitely appreciate the blue-green foliage. In some climates, the color may remain evergreen all year-long!

Cassa Blue Flax Lily doesn't spread by rhizomes. Instead, it forms pretty clumps that slowly reach the mature spread listed on the Plant Highlights.

Look for the airy panicles of star-shaped blue flowers with yellow stamens in summer. These small violet flower clusters will be held on stems above the foliage...and their nectar will bring butterflies to your space!

Over the season, these blooms turn into pretty, dark blue colored fruit. Sure, these rugged plants are considered "workhorses", but that doesn't make them any less ornamental.

Count on these slow-growing, erect clumps to enliven coastal areas, and hot inland areas. They'll add a marvelously modern architectural style to your plantings.

Place your order for Cassa Blue Flax Lily from our warm climate plant experts today!

How to Use Cassa Blue Flax Lily in the Landscape

This is an exceptional choice for borders in front of shrubs. Create a solid row by planting 18 inches apart...stagger a second row behind the first for a faster fill.

Spread out the plant spacing to 40 inches apart if you are interested in an ultra-modern, low-maintenance look. Each plant will grow into an upright accent that reads as an individual.

Place wood mulch between the plants to suppress weeds and keep the roots cool. If you like, explore some of the inorganic mulches like tumbled landscape glass for a vivid look year-round.

Make your landscape your own with your styling choices. Cassa Blue Flax Lily is a perfect canvas to start from to bring your vision to life.

Carve out a sinuous planting bed to define separate outdoor rooms. Line the edges of the bed with Cassa Blue Flax Lily and install a series of Toyon or Dwarf Strawberry Trees as a screen.

This enchanting perennial loves sunshine, but will also grow in partial shade. This tolerance makes it a perfect choice for borders that wend their way through a variety of light conditions.

Even in small space gardens, Cassa Blue Flax Lily will effortlessly elevate the look. Keep several plants in large outdoor pots for many years of beautiful service.

Try a pair of these container gardens on either side of your front door. Dress them up with other "Fillers" and "Spillers" or keep them as a single species planting.

Match the pots to your home's exterior, or make a statement with a vivid fuchsia. You can even pick up the shade of the flowers' yellow stamens for a fun accent.

Leverage all these ideas in residential or commercial properties. You'll grow to count on their high performance and minimal care requirements!

#ProPlantTips for Care

Plant this special perennial in full sun, or tuck them into a partially shaded spot. They do need at least four hours of sunshine a day.

Well-drained soil is important to maintain the overall health of these long-lived plants. Add extra soil to create a planting mound, if you need sharper drainage.

Elevate containers on bricks or clay pot feet. Please ensure containers have large drainage holes, and cover them with window screening to stop loose soil from escaping.

Provide a consistent amount of water the first season for in-ground plants to get their roots established. Nature Hills Root Booster adds life-long support for feeder roots and is highly recommended.

After the first season in the ground, Cassa Blue Flax Lily becomes waterwise. Provide moisture to container-grown plants, and give your Lilies water during extended drought to protect your investment.

Prune after flowering to tidy up, as needed. Clean up any fallen debris from mass plantings with very light raking.

Please order enough Cassa Blue Flax Lily to complete your entire project. Remember, you'll be competing with professional landscape artists for your limited inventory. Order now!

Buying Options for Plants

Nature Hills sells a large variety of plants with several options available. Plants are offered in both potted containers and as dormant bare root without soil. Here is a helpful resource to understand your options as you create a beautiful landscape with help from Nature Hills.

Ever wonder what a larger plant will mean for your landscape? Container Sizes are really all about the age of the plant!

Seasonally, Nature Hills offers hand selected, high quality bare root trees, shrubs and perennials. Bare root plants are sold by height from the top of the root system to the top of the plant. Plants may be taller than the height minimums.

  • Popular sizes of select trees are 1 foot, 2 feet, 3 feet, etc.
  • Popular sizes of select bare root plants is 1 foot, 18 inches, etc.

Nature Hills Container Size by Volume

Keep in mind, specific varieties and different growing conditions can affect the rate at which plants grow. Variations in size may occur.

Young Plants to 18 Months
Size Volume
2"x2"x3" Ranges from .18 to .21 dry quarts / .198 to .23 dry liters in volume
4.5" Container Equal to .65 dry quart / .72 dry liter in volume
Sprinter Pot Equal to .63 dry quart / .69 dry liter in volume
4" Container Ranges from .31 to .87 / .35 to .96 dry liter in volume
6" Container Equal to 1.4 dry quarts / 1.59 dry liters in volume
1 Quart Equal to 1 dry quart / 1.1 dry liter in volume
5.5" Container Equal to 1.89 of a dry quart / 2.08 dry liters in volume
4"x4"x5" Ranges from .8 to 1.1 dry quarts / .88 to 1.2 dry liters in volume
4"x4"x6" Ranges from 1.0 to 1.3 dry quarts / 1.1 to 1.41 dry liters in volume
4"x4"x9" Ranges from 1.1 to 2.1 dry quarts / 1.2 to 2.3 dry liters in volume
4"x4"x10" Ranges from 1.7 to 2.3 dry quart / 1.87 to 2.53 dry liters in volume
Plants 18 Months - 2.5 Years Old
Size Volume
2 Quart Equal to 2 dry quarts / 2.2 dry liters in volume
#1 Container Ranges from 2.26 to 3.73 dry quarts / 2.49 to 4.11 dry liters in volume
5"x5"x12" Equal to 3.5 to 4.3 dry quarts / 3.85 to 4.74 dry liters in volume
Plants 2 - 4 Years Old
Size Volume
#2 Container Ranges from 1.19 to 1.76 dry gallons / 5.24 to 7.75 dry liters in volume
#3 Container Ranges from 2.32 to 2.76 dry gallons / 10.22 to 12.16 dry liters in volume
Plants 3 - 5 Years Old
Size Volume
#5 Container Ranges from 2.92 to 4.62 dry gallons / 12.86 to 20.35 dry liters in volume
#7 Container Ranges from 5.98 to 6.08 dry gallons / 26.34 to 26.78 dry liters in volume

About Plant Sentry™

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This proprietary eCommerce software prevents the shipment of a restricted plant to each state. The Plant Sentry system includes a shipment certification program. The Plant Sentry Compliance Officer works closely with and each nursery or fulfillment center to ensure only compliant plants are sold to customers.

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To obtain a more accurate shipment time-frame, simply enter your zip code in the “Find Your Growing Zone” box to the right. Our plants are grown all over the country and lead time on items may be different because of this. Once your order is placed, you will also receive the specific shipment time-frame information as part of your order confirmation. Once an item ships, you will receive shipment notification and tracking numbers, so you can follow along while your plant travels to your doorstep. We use FedEx, UPS, or USPS at our discretion.

Shipping Rates

At Nature Hills we handle, package and ship the products you order with the utmost care to ensure healthy delivery. Shipping and handling charges are calculated based on the tables below. Please note that some items include an additional handling surcharge, these will be noted on the item's product page.

From To S&H
0 - 19.99 18.99
20 - 49.99 21.99
50 - 69.99 24.99
70 - 99.99 29.99
100 - 129.99 34.99
130 - 149.99 41.99
150 - 150+ Approx 27%

Click here to see our full rates


Cassa Blue Flax Lily Is Suited to Grow in Zones 7-10
Growing Zones 7-10
More Information
Brand Nature Hills' Choice
Botanical Name Dianella caerulea 'DBB03'
Type Perennial
Mature Height 24 - 30 inches
Mature Spread 2-3 feet
Sun Exposure Full Sun, Partial Shade
Soil Well Drained
Moisture Low Once Established
Growth Rate Slow
Flower Color Blue
Foliage Color Blue
Fall Color Blue
Pollinator Friendly Yes