Phormium colensoi unidentified cultivar

Synonyms

Phormium cookianum unidentified cultivar

Herbaceous Perennial

A clump-forming perennial with broad, arching, sword-shaped, deep chocolate brown-maroon leaves edged bright green and bearing upright panicles of tubular yellowish-red flowers, in summer on mature plants

Position

Full sun

Soil Types

Chalk, Clay, Loam, Sand

Max Height

1.5-2.5 metres

Max Spread

1.5-2.5 metres

Size

Time to Maturity: 5–10 years
Max Spread: 1.5-2.5 metres
Max Height: 1.5-2.5 metres

Growing Conditions

Chalk Clay Loam Sand

Moisture: Moist but well–drained or Well–drained
pH: Acid or Alkaline or Neutral

Position

Full sun

Aspect: South–facing or West–facing
Exposure: Sheltered
Hardiness

Hardiness Ratings

All ratings refer to the UK growing conditions unless otherwise stated. Minimum temperature ranges (in degrees C) are shown in brackets

H1A: under glass all year (>15C)
H1B: can be grown outside in the summer (10 - 15)
H1C: can be grown outside in the summer (5 - 10)
H2: tolerant of low temperatures, but not surviving being frozen (1 to 5)
H3: hardy in coastal and relatively mild parts of the UK (-5 to 1)
H4: hardy through most of the UK (-10 to -5)
H5: hardy in most places throughout the UK even in severe winters (-15 to -10)
H6: hardy in all of UK and northern Europe (-20 to -15)
H7: hardy in the severest European continental climates (< -20): H4

Colour & Scent

Season	Stem	Flower	Foliage	Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family: Asphodelaceae
Native to GB/Ireland: No
Foliage: Evergreen
Habit: Clump forming
Genus: Phormium are evergreen perennials, making a large clump of leathery, strap-shaped leaves, with tall panicles of small, tubular flowers in summer
Name Status: Correct

How to Grow

Cultivation

Grow in fertile, moist but well-drained soil in full sun. In frost-prone areas, provide a deep, dry mulch in winter

Propagation

Propagate by division in spring

Suggested planting locations and garden types

Architectural
Coastal
Cottage and informal garden
Gravel garden
Sub-tropical
Flower borders and beds

Pruning

Cut down flowered stems when they fade

Pests

May be susceptible to phormium mealybugs

Diseases

Generally disease-free