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Almost bulletproof: The toughest Australian ornamental grasses you can buy online

Almost bulletproof: The toughest Australian ornamental grasses you can buy online

Some plants fail loudly. Others quietly keep going even when conditions are not ideal.

If you are buying native grasses online, especially without seeing them once mature in the ground or even touching them in your hands at the nursery, what you are really buying is forgiveness. Forgiveness for missed watering. Forgiveness for not checking on it regularly. Forgiveness for weather that does not relent.

This guide is not about which grasses are the prettiest at their peak. It is about which Australian grasses continue to look acceptable, intentional, and alive when gardens do not get perfect care.

These are the grasses people buy when they want to set and forget, not for people looking for a new full-time hobby.

What “almost bulletproof” really means in a garden

A tough grass is not just one that survives drought or frost. Those are baseline expectations for Australian plants.

A truly forgiving grass also:

  • Does not collapse or rot when conditions swing from wet to dry (when planted in the correct position)
  • Does not punish you for missing a seasonal cut-back (Rustic™ Poa is the exception in this guide, as it does prefer a cutback every spring)
  • Does not look dead or chaotic between growth cycles
  • Regrows reliably after being trimmed down to 100mm

These qualities matter far more than an ability to look breathtakingly pretty for a couple of months in its favourite time of year.

Native low-mow turf

This grass is not a tuft like the others, but is more of a spreading groundcover or lawn alternative.

Zoysia native hybrid ‘ZOY01’ PBR Trade Name Ozbreed Zen Grass®

This native lawn grass that only needs mowing once per year in Brisbane. I wish we’d had this installed around playgrounds when I was working in council maintenance. It has fine, dense foliage with a low mounding habit and requires very little maintenance. It is the ideal lawn “alternative” for someone who actually does want a lawn.

Poa

The forgiving soft grass for cooler and southern gardens

Poa is often chosen for its softness, but its real strength is predictable recovery. When neglected, Poa rarely dies suddenly. Instead, it tends to pause, then resumes growth when conditions improve. Part of its lifecycle is that it will boom through the warmer months, and then slow down and die back a bit during winter. This is why we love Poa; it reflects the seasonal emotions and reliably bounces back each spring especially if you give it a hard cutback after winter.

For gardeners south of Sydney, Poa offers a rare combination of softness and resilience.

Poa spp. ‘POL12’ PBR Trade Name Eskdale Blue™

Eskdale Blue

Blue-leaved tussock grass forming soft mounded clumps; ideal for mass planting and low-maintenance gardens

Poa poiformis PP500 Trade Name Kingsdale™

Kingsdale

Compact Poa with bright soft flowers and fine foliage; ideal for mass/mixed planting and native gardens

Poa spp. ‘POL11’ PBR Trade Name Rustic™

Fine-leaf native grass with rustic-brown seed heads; drought tolerant and well-suited to landscaping

Cenchrus

Tough ornamental grasses with impressive plumes

Cenchrus has a reputation problem because common forms self-seed freely. Cultivated selections are different; these varieties have shown through extensive testing that they are not invasive even though they are not sterile.

Well-selected Cenchrus varieties tolerate periodic flooding, drought, heat, humidity, and poor soil while still producing decorative foliage and flower heads.

Cenchrus purpurascens ‘PA300’ Trade Name Nafray®

Nafray

Non‑invasive native grass with fine texture; drought/flood tolerant and showy plumes

Cenchrus purpurascens Trade Name Cream Lea®

Cream Lea

Variegated Australian grass with green and cream striped leaves; compact and easy-care ornamental grass

Cenchrus purpurascens ‘PAV300’ PBR Trade Name Pennstripe™

Pennstripe

Variegated dwarf fountain grass with stripy leaves; clump forming and non-invasive

Lomandra

Structural reliability when everything else struggles

Lomandra earns its reputation honestly. Most forms are not exciting (possibly with the exception of giant L. hystrix varieties), but they are dependable background actors.

Its greatest strength is structural persistence. A tough Lomandra rarely flops, rarely rots, and rarely needs rescuing. It continues to hold form even when conditions are poor.

Lomandra labill. ‘LM600’ PBR Trade Name Evergreen Baby™

Evergreen Baby

Dense compact Lomandra with fine foliage; hardy and tolerant of drought and wet soil

Lomandra ‘LM301’ PBR Trade Name Grass Tree 310™

Grass Tree

Quick-growing mat rush bred to resemble a young grass tree; tall narrow habit

Lomandra longifolia ‘MURU’ PBR Trade Name Great White™

Great White

Variegated Lomandra with green-and-cream striped leaves and larger flowers

Lomandra hystrix ‘LHBYF’ PBR Trade Name Katie Belles™

Katie Belles

Tall Lomandra longifolia with graceful weeping foliage and large fragrant flower spikes; ideal feature or mass planting

Lomandra longifolia ‘KATRINUS DELUXE’ PBR

Katrinus Deluxe

Improved dense form of Katrinus with masses of yellow flowers and uniform habit

Lomandra longifolia ‘LM360’ PBR Trade Name Lady Tanika®

Lady Tanika

Dwarf form of Tanika; neat clumping green foliage; sterile and disease-resistant

Lomandra longifolia ‘LM400’ Trade Name Nyalla®

Nyalla

Trunkless grass-tree-like Lomandra; fast-growing and coastal tolerant; good for erosion control

Lomandra fluviatilis ‘LM380’ PBR Trade Name Shara Blue™

Shara Blue

Blue-green version of Shara; compact erosion-control habit; resilient in exposed or wet sites

Lomandra fluviatilis ‘ABU7’ PBR Trade Name Shara™

Shara

Compact Lomandra with very fine leaves; ideal for erosion control and humid or wet soils

Lomandra hystrix ‘LHWP’ PBR Trade Name Tropic Cascade™

Tropic Cascade

Mid-sized Lomandra hystrix with weeping deep-green foliage and fragrant yellow flowers; suits wet or dry soils

Lomandra confertifolia ‘SIR5’ PBR Trade Name Wingarra®

Wingarra

Low-growing Lomandra confertifolia with fine blue-green foliage; very tough

Dianella

Tough with a decorative edge

Dianella is one of Australia’s most beloved plants. Their spring flowers feed buzz pollinators like blue-banded bees, and their fruits feed birds and more.

Even when foliage is damaged or tired, Dianella usually remains upright and recognisable. Every few years, you might cut them back to 100mm or so to help them refresh their foliage.

Dianella caerulea ‘DCNC3’ PBR Trade Name Baby Breeze™

Baby Breeze

Dwarf form of Breeze® flax lily; mat-forming and weed-suppressing with blue flowers

Dianella caerulea DCNCO Trade Name Breeze®

Breeze

Mid-sized Dianella with broad green leaves and masses of blue flowers; extremely tough and low-maintenance

Dianella caerulea DBB03 Trade Name Cassa Blue®

Cassa Blue

Native blue flax lily with broad steel-blue leaves and tall slender stems

Dianella hybrid ‘DP401’ PBR Trade Name Clarity Blue™

Clarity Blue

Silvery-blue native flax lily; broad steel-blue leaves and elegant form

Dianella caerulea DCMP01  Trade Name Little Jess™

Little Jess

Very compact flax lily with masses of purple spring flowers

Dianella revoluta DR5000 Trade Name Little Rev™

Little Rev

Dwarf Dianella with fine foliage and blue flowers; forms neat clumps; very hardy

Dianella revoluta DRG04 Trade Name Revelation®

Revelation

Mid-sized Dianella revoluta cultivar with blue flowers and robust growth; perfect for mass plantings

Dianella tasmanica TR20 Trade Name Tasred®

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Cold-hardy Dianella tasmanica with reddish leaf bases and blue berries; tough ornamental grass

Dianella tasmanica ‘TAS300’ PBR Trade Name Wyeena®

Wyeena

Variegated Tasman flax lily with striking cream and green striped leaves; hardy and drought tolerant

Choosing the right “bulletproof” grass for your situation

Ask yourself three questions before buying.

Do I live somewhere with climatic extremes?
Plants that are almost bulletproof in the freezing winter of Canberra may not be bulletproof in the hot and humid wet season of the Top End of Australia. And vice versa.

Do I want softness or  architectural structure?
Poa and Cenchrus generally lean soft. Some Dianella and Lomandra lean structural. And each variety within each genus will have their own unique personality.

Will missed maintenance be a problem?
All of these plants are low in maintenance. But true grasses like Poa and Cenchrus would really prefer that you give it a hard prune somewhere between early winter to early spring, so if you can’t be bothered to give it a yearly prune go for Lomandra or Dianella instead. If you’re expecting drought and don’t intend to irrigate, all of these genera have cultivars that will thrive however make sure you choose one that explicitly states it is drought tolerant as there is a lot of variation in tolerance between members of the same genus or even the same species.

Am I more worried about death or disappointment?
All of these survive. Consider what the limiting factors are likely to be in your garden. Irrigation? Drainage? Temperature? Sunlight availability? No matter the conditions, you’ll find something to suit in this guide.

 

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