Dusky Chief Phormium
Phormium tenax 'Dusky Chief'
Not currently listed at our partner nurseries.
Essentials
At a Glance
Plant Type
Perennial
Height
36 inches
Width
24 inches
Light
Full Sun, Partial Sun
Zones
7, 8, 9
Water
Low to moderate
Humidity
Average
Lifespan
Long-lived perennial
Native To
New Zealand
Toxicity
Non-toxic to humans and pets
The Story
Plant Bio
Phormium tenax, commonly known as New Zealand flax, is a robust perennial with sword-like, strap-shaped leaves that form dense clumps, bearing tall flower spikes with tubular, often reddish flowers. The 'Dusky Chief' cultivar boasts striking dark, dusky purple to nearly black foliage, adding dramatic contrast and visual interest to garden landscapes.
Bloom Period:
Uses & Benefits:
Marketplace
Where to Buy
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Planting
How to Grow
- Tuck root ball into prepared soil with good drainage.
- Water thoroughly after planting to settle soil.
- Mist cuttings regularly to maintain humidity, 6 weeks.
- Fertilize monthly with balanced fertilizer during growing season.
- Mulch around base to conserve moisture and suppress weeds.
- Divide every 3-4 years in early spring for propagation.
Pro Tip
Ensure well-draining soil and full sun for best color and growth.
Keep It Thriving
Care Guide
Do
- Water regularly during dry spells 🌱
- Apply balanced fertilizer in spring
- Remove dead or damaged leaves to maintain appearance
Don't
- Avoid overwatering to prevent root rot ❌
- Do not fertilize in late fall
- Keep away from overly shaded spots
Seasonal Care Calendar
| Task | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Divide | ||||||||||||
| Mulch | ||||||||||||
| Spring Cleanup |
Watch Out For
Pests & Diseases
Common Pests
Common Diseases
In the Garden
Landscape Uses & Companions
Landscape Uses
Companion Plants
Multiply
Propagation Methods
Good to Know
Common Questions
Dusky Chief Phormium questions
What zones can Dusky Chief Phormium grow in?
Dusky Chief Phormium is hardy in USDA Zones 7–9. Inside that range it survives winter in the ground; outside it, grow it as an annual or a container plant you protect.
Is Dusky Chief Phormium deer resistant?
Not reliably. Deer may browse Dusky Chief Phormium, especially tender spring growth — plan on repellents or fencing where pressure is high.
When does Dusky Chief Phormium bloom?
Dusky Chief Phormium typically blooms in late summer through late fall. Exact timing shifts a week or two with your zone — Sow's bloom calendar maps it to your garden.
Does Dusky Chief Phormium need full sun?
Dusky Chief Phormium does best in full sun to part shade. In hot climates, afternoon shade keeps blooms fresher longer.
Is Dusky Chief Phormium drought tolerant?
Yes — once established (usually after the first full season), Dusky Chief Phormium handles dry spells with minimal watering. Water deeply its first year to build the root system that makes that possible.
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Grow Dusky Chief Phormium with confidence
See it in a design of your actual yard, get zone-matched care reminders, and track it season by season in your garden journal.
