Libertia grandiflora (Libertia, New Zealand Iris, New Zealand Satin Flower)


Botanical Information

FamilyIridaceae
GenusLibertia
Speciesgrandiflora
SynonymsLibertia orbicularis
CategoryPerennials
OriginNative to New Zealand.

Details

USDA Hardiness Zone8a - 11
USDA Hardiness Ref.
Canadian Hardiness ZoneRequires cold season protection under glass.
Canada Hardiness Ref.
RHS Hardiness ZoneH5 - H1c
RHS Hardiness Ref.
Temperature (°C)(-12.2) to above 4.5
Temperature (°F)10 - 40
Height90 cm
Spread60 cm
Flowering PeriodMay, June

Description and Growing Information

General DescriptionA perennial, bearing slender, upright stems of white flowers above sword-shaped foliage.
PropagationBy seed or division of rhizomes.
CultivationGrow in sunny, sheltered location with protection from winter frosts.
Notable SpecimensTrebah Garden Trust, Mawnan Smith, Falmouth, Cornwall, United Kingdom.
Bark/Stem DescriptionConnected by narrow stolons.
Leaf DescriptionNarrow, dark-green, grass-like leaves.
Flower DescriptionWhite, bowl-shaped flowers, 2-3 cm across, carried on erect stems.
Fruit DescriptionRound seed pods turn black when mature.

Photographs