grass

Clarity Blue Dianella

Dianella hybrid 'Clarity Blue'

The Story

Plant Bio

Dianella is a genus of clumping, evergreen perennials native to the Southern Hemisphere, characterized by their tough, strap-like foliage and small, star-shaped flowers. These grass-like plants produce ornamental, metallic-blue berries that persist on upright stems above the leaves.

'Clarity Blue' is a compact, Australian-bred hybrid distinguished by its exceptionally clean, rigid, silvery-blue foliage that maintains its intense color year-round. It exhibits a highly structured, upright-spreading habit that resembles a miniature Phormium, making it a striking architectural accent.

Uses & Benefits:

Provides year-round architectural structure with its rigid, silvery-blue foliage and delicate spring flowers followed by metallic blue berries.

Highly drought-tolerant and deer-resistant once established, making it ideal for low-maintenance landscapes.

Attracts general insect pollinators like bees and butterflies to its star-shaped blossoms.

Essentials

At a Glance

Plant Type

Grass

Height

30"

Width

24"

Light

Full Sun, Partial Sun

Zones

8, 9, 10

Water

Low

Humidity

Moderate

Lifespan

Perennial

Native To

Australia (parentage)

Toxicity

Mildly toxic if ingested

Bloom period

Spring – Summer

In flower about 6 months of the year

Planting

How to Grow

Select a planting site in full sun to partial shade with excellent drainage.
Dig a hole twice as wide as the root ball and of equal depth, backfilling with native soil.
Water thoroughly at planting, then establish a deep, infrequent watering schedule until the root system is established.
Apply a thin layer of organic mulch around the base, keeping it clear of the central crown to prevent rot.

Pro Tip

Avoid planting in low-lying depressions where water pools; poor drainage and waterlogged soil will rapidly cause fatal crown rot.

Keep It Thriving

Care Guide

Do

Plant in well-drained sandy loam or clay loam soils.
Trim away old, damaged lower leaves individually at the base in spring.
Use a low-phosphorus or balanced slow-release fertilizer sparingly after establishment.

Don't

Do not plant in heavy, poorly drained soils or boggy depressions.
Do not shear the entire plant back into old, leafless wood.
Do not overwater once the plant is established in the landscape.

Seasonal Care Calendar

Task	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Fertilize
Mulch
Pest Check
Prune

Watch Out For

Pests & Diseases

Common Pests

Common Diseases

In the Garden

Landscape Uses & Companions

Landscape Uses

Architectural AccentMass PlantingCoastal GardenContainer SpecimenBorder Edging

Companion Plants

Lomandra longifolia Westringia fruticosa Rosmarinus officinalis Agave attenuata

Multiply

Propagation Methods

Good to Know

Common Questions

Clarity Blue Dianella questions

What zones can Clarity Blue Dianella grow in?

Clarity Blue Dianella is hardy in USDA Zones 8–10. Inside that range it survives winter in the ground; outside it, grow it as an annual or a container plant you protect.

Is Clarity Blue Dianella deer resistant?

Yes — Clarity Blue Dianella is rated deer-resistant. Deer typically pass it over, though extreme hunger can override any plant's defenses.

When does Clarity Blue Dianella bloom?

Clarity Blue Dianella typically blooms in spring through summer. Exact timing shifts a week or two with your zone — Sow's bloom calendar maps it to your garden.

Does Clarity Blue Dianella need full sun?

Clarity Blue Dianella does best in full sun to part shade. In hot climates, afternoon shade keeps blooms fresher longer.

Is Clarity Blue Dianella drought tolerant?

Yes — once established (usually after the first full season), Clarity Blue Dianella handles dry spells with minimal watering. Water deeply its first year to build the root system that makes that possible.