Phormium cookianum 'Emerald Gem' is a stunning ornamental plant commonly known as New Zealand Flax. 
 
Description:
 
Appearance: 'Emerald Gem' is a compact variety of Phormium cookianum, featuring vibrant green leaves that arch gracefully. The foliage forms dense clumps, providing an attractive accent to gardens or landscapes.
Size: It typically reaches a height of around 60cm with a similar spread, making it suitable for both small and large spaces.
Flowers: In summer, it may produce small, inconspicuous flowers on tall stalks. However, the main attraction is its striking foliage rather than its flowers.
 
Growing Conditions:
 
Sunlight: Phormium cookianum 'Emerald Gem' thrives in full sun to partial shade. It prefers at least six hours of sunlight per day for optimal growth and vibrant foliage coloration.
Soil: Well-draining soil is essential for this plant. It tolerates a wide range of soil types, including sandy and loamy soils, but it dislikes waterlogged conditions. Ensure good drainage to prevent root rot.
Watering: While established plants are somewhat drought-tolerant, it's best to water them regularly, especially during dry spells. Water deeply but infrequently to encourage deep root growth.
Temperature: It is tolerant of a range of temperatures but prefers mild to warm climates. It can withstand light frosts once established but may suffer damage in prolonged freezing conditions.
Fertilization: Feed 'Emerald Gem' with a balanced, slow-release fertilizer in spring to promote healthy growth and vibrant foliage. Avoid excessive fertilization, as it can lead to lush growth prone to flopping.
Maintenance: Remove any dead or damaged leaves to maintain the plant's appearance and prevent pests or diseases. Dividing overcrowded clumps every few years can rejuvenate the plant and promote better growth.
 
Uses in Landscaping:
 
Ornamental Plant: The attractive, arching leaves and tall flower spikes make Phormium cookianum a popular choice for ornamental planting in gardens, borders, and containers. Its striking foliage adds texture and color year-round.
Coastal Plantings: Due to its tolerance of salty winds and sandy soils, Phormium cookianum is ideal for coastal gardens and landscapes. It helps stabilize sandy soils and can be used in dune restoration projects.
Erosion Control: The fibrous root system makes it effective for erosion control on slopes and banks. It helps bind the soil and prevent erosion in vulnerable areas.
Native and Wildlife Gardens: As a native New Zealand plant, Phormium cookianum is suitable for native plant gardens and wildlife gardens. It provides habitat and food for birds and insects.
Mass Planting: Its hardiness and low maintenance requirements make it suitable for mass planting in public spaces, parks, and commercial landscapes. It can be used to create striking visual displays and ground cover.
Mixed Borders: Phormium cookianum pairs well with other perennials, grasses, and shrubs in mixed borders. Its architectural form and foliage contrast nicely with a variety of other plants.