Phormium (New Zealand Flax) 'Platt's Black'
Dramatic near black leaves with a subtle bronze sheen create a striking architectural presence, their deep colour maintaining intensity throughout the seasons. The upright sword shaped foliage forms bold clumps that provide exceptional contrast against lighter plants, appearing almost metallic in bright sunlight. More resistant to fading than many dark leaved varieties, it retains its rich hue even in full sun when adequately watered. Exceptionally tolerant of coastal conditions and urban environments, it thrives in well drained soil while adding year round structure. Perfect for creating sophisticated focal points in contemporary plantings, the inky leaves combine beautifully with silver foliage or bright flowering perennials. A superb choice for adding depth and drama to Mediterranean schemes or modern gardens, where its dark silhouette makes a powerful statement.
Family of Trees: Asphodelaceae
Habit: Evergreen Perennial
Growth Rate: 30-60 cm/year
Optimal Temperature: 10-25°C, hardy to -10°C
Harmful if Eaten?: Toxic if ingested
Flowers or Berries: Dark Red Flowers
Hardiness: H4 (Hardy)
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)
| Spring | Summer | Autumn | Winter | |
|---|---|---|---|---|
| Leaves | ||||
| Flowers | ||||
| Berries |
Spring
Summer
Autumn
Winter
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