How to Grow Variegated Flax Lily
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Variegated Flax Lily
Dianella caerulea 'Variegata'
grassVariegated flax lily is an ornamental grass-like perennial with striking blue-green and cream or white striped foliage. It produces delicate blue or purple flowers followed by decorative blue berries, making it attractive year-round. This Australian native is valued for its foliage color and architectural form in gardens.
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Example Variegated Flax Lily timeline · Pittsburgh, PA (Zone 6b)
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Plant Variegated Flax Lily
Around Apr 17Near Pittsburgh's average last spring frost.
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Tend & protect
Late spring–summerWatering, feeding, and pest-watch reminders.
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Harvest Variegated Flax Lily
Late summer into fallBefore the first fall frost (≈ Nov 8)
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Growing Conditions
Soil
Growing Zones
Find your zone →Thrives in zones 8b-11, with protection in colder zones 8a
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Get my Variegated Flax Lily timeline →Growth Stages
Establishment
3-6 monthsYoung transplants with compact variegated foliage; minimal height development
Water regularly, provide afternoon shade in hot climates, avoid transplanting stress by planting in cool weather; keep soil consistently moist but not waterlogged
Vegetative Growth
6-12 monthsPlant develops more foliage, clump expands, variegation becomes more prominent with good light exposure
Maintain consistent watering, apply organic mulch, avoid over-fertilizing which reduces variegation intensity; remove any non-variegated shoots immediately
Flowering
4-8 weeksDelicate purple, lavender, or blue flowers emerge on tall stems above foliage, typically appearing in spring to early summer
Continue regular watering and maintenance; flowers attract pollinators; deadheading not necessary but can encourage longer flowering
Fruiting
8-16 weeksFlowers fade and are replaced by attractive metallic blue berries that persist for weeks or months
Leave berries on plant for ornamental value and bird food; berries will eventually drop; no deadheading needed unless fruit is undesired
Dormancy/Winter Rest
3-4 monthsGrowth slows in cooler months; variegated foliage remains attractive but may show slight color fading
Reduce watering frequency; apply winter mulch in zones 8a-8b; avoid pruning until spring; protect from hard freezes with frost cloth if needed
Companion Planting
Plan your garden →Plant with:
Avoid planting near:
Common Pests
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Spray with water to dislodge; use miticide if severe; improve air circulation; avoid overhead watering in hot, dry weather
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Hand-pick early morning or evening; use copper tape barriers; apply beer traps; encourage natural predators like ground beetles
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Inspect regularly, remove with cotton swab and isopropyl alcohol; apply insecticidal soap if infestation is heavy; ensure good air circulation
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Improve drainage immediately; reduce watering frequency; repot in fresh, sterile soil if in containers; avoid wetting foliage
Uses
Garden Accent & Variegated Foliage
OrnamentalThe striking cream and blue-green striped foliage serves as a focal point in mixed borders, containers, and tropical-styled gardens, providing year-round visual interest. [source]
Bird-Attracting Ornamental
WildlifeThe persistent blue berries attract birds, particularly for late-season feeding; flowers provide nectar and pollen for pollinators. [source]
Cut Flower & Florist Material
HouseholdThe elegant sprays of flowers and variegated foliage are used by florists and gardeners for fresh and dried floral arrangements. [source]
Dried Arrangements & Craft Material
CraftThe sturdy stems and berries dry well and are used in dried flower arrangements, wreaths, and craft projects. [source]
Harvest Tips
Not harvested for yield; plant is grown for ornamental foliage and flowers. Remove dead or damaged foliage in spring; cut back old flower stems after berries drop if desired for tidiness; divide clumps every 3-4 years in early spring
Fun Facts
- 🌱 Dianella is native to Australia and was named after the Greek goddess Diana; the genus has over 50 species distributed across Australia, New Guinea, and New Zealand.
- 🌱 The variegated forms develop more intense stripe patterns when grown in bright, indirect light; plants grown in too much shade may lose some variegation.
- 🌱 The blue berries are actually used by Dianella species in traditional Aboriginal Australian medicine and food preparation.
Gardening Terms
New to gardening? Learn about terms used in this guide:
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