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Products > Phormium cookianum
 
Phormium cookianum - Mountain Flax
   

 
Habit and Cultural Information
Category: Perennial
Family: Phormiaceae (~Xanthorrhoeaceae)
Origin: New Zealand (Australasia)
Evergreen: Yes
Flower Color: Yellow
Bloomtime: Spring/Summer
Synonyms: [Phormium colensoi]
Height: 3-4 feet
Width: 3-4 feet
Exposure: Sun or Shade
Seaside: Yes
Irrigation (H2O Info): Medium Water Needs
Winter Hardiness: 15-20 F
Phormium cookianum (Mountain Flax) - This New Zealand Flax species grows to 4-5 feet tall with wide spreading 2 1/2 inch wide olive-green leaves that arch gracefully. This is the parent that gives the arch to many of the hybrids. Yellowish-orange flowers bloom on long spikes that, unlike the vertical flower spikes of Phormium tenax, angle out from the plant's crown. The seed pods, looking like long black bean pods, are decorative and can weigh the inflorescence back nearly to the ground. Seed pods are useful in large flower arrangements. Plant in full sun to shade. This Phormium can tolerate fairly dry conditions (coastal) but looks best with occasional to regular irrigation. Hardy to 15-20 F. It is possibly root hardy below these temperatures but does suffer severe foliage damage unless protected. This is a very nice large understory shade plant. In our garden is even grows well under the heavy shade of a large Citrus Tree.  The information on this page is based on research conducted about this plant in the San Marcos Growers library, from online sources, and from observations made of the crops growing in our nursery, plants in the nursery's garden and those in other gardens where we may have observed it. We also have incorporated comments received from others and welcome getting feedback from those who may have additional information, particularly if this information includes cultural information that would aid others in growing Phormium cookianum.
 
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