Phormium Species, New Zealand Flax, New Zealand Hemp

Phormiumtenax

Family
Asphodelaceae (as-foh-del-AY-see-ee)
Genus
Phormium (FOR-mee-um)
Species
tenax (TEN-aks)
Synonym
Phormium atropurpureum
Phormium flavovirens
Sun Exposure
Full Sun
Foliage
Grown for foliage
Evergreen
Smooth
Height
6-8 ft. (1.8-2.4 m)
8-10 ft. (2.4-3 m)
Spacing
4-6 ft. (1.2-1.8 m)
Hardiness
USDA Zone 7a: to -17.7 °C (0 °F)
USDA Zone 7b: to -14.9 °C (5 °F)
USDA Zone 8a: to -12.2 °C (10 °F)
USDA Zone 8b: to -9.4 °C (15 °F)
USDA Zone 9a: to -6.6 °C (20 °F)
USDA Zone 9b: to -3.8 °C (25 °F)
USDA Zone 10a: to -1.1 °C (30 °F)
USDA Zone 10b: to 1.7 °C (35 °F)
USDA Zone 11: above 4.5 °C (40 °F)
Danger
N/A
Bloom Color
Red
Bloom Time
Late Spring/Early Summer
Other Details
Category
Perennials
Water Requirements
Average Water Needs; Water regularly; do not overwater
Foliage Color
Orange/Apricot
Red
Where to Grow
Bloom Characteristics
Bloom Size
Other details
Soil pH requirements
6.6 to 7.5 (neutral)
Patent Information
Non-patented
Propagation Methods
By dividing rhizomes, tubers, corms or bulbs (including offsets)
From seed; direct sow after last frost
Seed Collecting
Bag seedheads to capture ripening seed
Allow pods to dry on plant; break open to collect seeds
Allow seedheads to dry on plants; remove and collect seeds
Seed does not store well; sow as soon as possible
Regional

This plant is said to grow outdoors in the following regions:

Auburn, Alabama

Chowchilla, California

Clovis, California

Davis, California

Huntington Beach, California

Lathrop, California

Manhattan Beach, California

Merced, California

Novato, California

Oakland, California

Redondo Beach, California

San Leandro, California

Santa Barbara, California

Stockton, California

Wildomar, California

Venice, Florida

Cincinnati, Ohio

Portland, Oregon

Bellevue, Washington

Des Moines, Washington

Kirkland, Washington

Long Beach, Washington

Seattle, Washington(2 reports)

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Gardener's Notes:

6
positives
2
neutrals
1
negative
Sort By:
Sort By:
C
ROSLINDALE, MA | March 2016 | negative

This species does not long survive south of Z8 in the southeastern US. The consensus is that it's the combination of high humidity and su...Read More

A
A
| April 2013 | positive

Another brilliant wind resister and an incredibly easy one to divide for planting elsewhere in your windbreak, just get that shovel in an...Read More

R
(Zone 1) | October 2012 | positive

New Zealand Flax (Phormium tenax) is ideally suited to growing on seacliffs, in a natural setting, or as a filler in a large area. This f...Read More

N
Novato, CA (Zone 10a) | May 2011 | positive

Grows very well here in the San Francisco Bay Area. We have frosts every winter and rare temperature drops into the mid to upper 20s, and...Read More

L
Portland, OR (Zone 8b) | May 2009 | neutral

A previous owner of my property planted upwards of 5 or 6 in a side yard, meaning that a decade later I have the privilege of seeing them...Read More

H
Cincinnati, OH (Zone 6b) | May 2004 | positive

After being bombarded w/ these on the TV garden shows, they have finally started to appear in small quantities here in Cincinnati.
...Read More

H
Northern California, CA | August 2003 | positive

Family name may be listed as Agavaceae or Phormiaceae, Giant New Zealand Flax has olive green foliage and can reach 6-10' high. Very eas...Read More

J
J
Oakland, CA (Zone 9b) | November 2002 | positive

Here in zone 9 coastal Nor. CA. many local nurseries offer the P. tenax hybrids, which are more brightly colored and smaller, better size...Read More

B
B
Baa
| January 2002 | neutral

An evergreen clump forming plant from New Zealand.

Has lancelike-sword shaped, upright, rigid, dark green leaves. Bears lo...Read More

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