Blueberry Flax Lily

Dianella tasmanica

White striped upright leaves are the trademark of blueberry flax lily, a South Florida favorite for borders and accents.

Blueberry flax lily plants around palms

These low growing plants seem to work everywhere and with everything... border plants they highlight shrubs behind them. An alternative to Aztec grass, they make more of an impact with wider leaves and a look somewhere between an ornamental grass and a lily.

As accents they're wonderful texture plants that bring out flower colors and the whiteness of the foliage contrasts nicely with other greenery in a mixed garden bed.
This showy plant forms a clump and can be planted in small groups or large "drifts" for more impact.

It produces delicate, light blue flowers almost too tiny to see on and off all year. Pretty at first, the long flower stems eventually turn brown and create a look that's not to everyone's can appear untidy and almost "weedy." The solution is to cut back the stems regularly for a cleaner look.

Though this plant will grow in nearly any light, the more sun the better for keeping the variegation at its peak.

There are new varieties with other leaf colorings like silvery-green foliage or yellow striping, though they may be harder to find.

Plant specs

Blueberry flax grows about 2 feet tall in full sun to part shade.

It's a moderate grower that does fine anywhere in South Florida.

In Zone 10, however, cold damage is less likely so the plant will look good year round.

Young plants in a garden bed

Do not plant in an area that stays wet after a hard rain...these plants hate that.

Plant care

Add a combination of top soil (or organic peat moss) and composted cow manure to the hole when you plant.

Trimming isn't needed, other than a spring clean up of leaves affected by cold and occasionally cutting back old flower stems.

This plant is moderately drought-tolerant, so regular watering with time between waterings for the soil to dry out a bit is ideal.

Fertilize 3 times a year - in spring, summer and autumn - with a top quality granular fertilizer. 

Plant spacing

Bushy 3-gallon plants at a nursery

Plant 2 to 2-1/2 feet apart. Ditto for placing beside or in front of other plants.

Come out from the house 1 to 2 feet, and in from walks and drives about 2 feet.

These plants will do fine in a container.

Landscape uses for blueberry flax lily

  • front of the border
  • grouped as a groundcover
  • foundation plant under low windows
  • accent for a garden bed
  • surrounding a palm
  • along a porch
  • around a mailbox or lamppost
  • background for very low plants
  • lining a sidewalk or garden path
  • around the base of a tree


COMPANION PLANT SUGGESTIONS: Crown of thorns, Nora Grant ixora, hibiscus, carissa, and purple queen.

Other plants you might like: Aztec Grass, Dwarf Oyster Plant

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