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grevillea knockout nz

Grevillea Knockout NZ is rapidly becoming a favourite among Kiwi gardeners searching for striking, low-maintenance shrubs with bold colour and texture. Known for its vibrant red blooms and lush foliage, Grevillea Knockout offers a dramatic focal point for any New Zealand garden. Whether you’re looking for reliable year-round interest or a nectar-rich addition to attract native birds and pollinators, this grevillea is a top contender. Robust and easy to grow, it's perfectly suited to local conditions and requires little care once established, making it a fantastic choice for both beginners and seasoned gardeners.

Grevillea Knockout

Grevillea 'Knockout' is a compact evergreen shrub celebrated for its masses of vibrant spider like flowers and attractive fine foliage. It flowers over a long season, attracting tui, bees, and other pollinators while providing outstanding colour in gardens throughout New Zealand.

grevillea-knockout-2
  • Suited to regions:
    Subtropical, Temperate
  • Plant type:
    Shrubs
  • Height:
    75 cm
  • Spread:
    1.00 m
  • Flowering time:
    Spring, Winter
  • Tolerances:
    Coastal, Extended dry periods, Hardy
  • Garden uses:
    Borders, Containers, Hedging, Living areas, Paths & Steps, Pool areas
  • Garden styles:
    Backyard, City & Courtyard, Coastal, Formal, Frontyard, Japanese, Mediterranean, Modern, Rock
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Grevillea Knockout

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Grevillea Knockout Features

Grevillea Knockout NZ stands out for its stunning clusters of scarlet flowers, which bloom generously from late winter through spring. The deep green, finely-divided leaves create a lush backdrop that highlights the vivid blooms. This shrub typically reaches 1.5 to 2 metres in height and width, forming a compact, bushy shape ideal for hedges, screening, or standalone feature planting.

One of the greatest benefits is its adaptability; Grevillea Knockout flourishes in a range of soils, especially those that are well-drained. It’s drought-tolerant once established, making it an excellent option for water-wise gardening and coastal NZ gardens. The flowers are loaded with nectar, attracting tui, waxeyes, and other native birds. Plus, grevilleas are notorious for their resilience to pests and diseases, ensuring a tidy, healthy garden with minimal fuss.

Planting and Caring for Grevillea Knockout NZ

If you’re planning to add Grevillea Knockout NZ to your landscape, plant it in a sunny spot that’s sheltered from harsh wind. While it tolerates light frosts, young plants appreciate protection during their first winters. Dig in plenty of organic matter and avoid heavy clay soils—grevilleas prefer an acidic to neutral pH.

Water your grevillea regularly during the first year to establish deep roots. Once mature, the plant requires little supplemental watering. Light pruning after flowering encourages bushier growth and keeps the plant tidy. Grevilleas appreciate occasional feeding with a low-phosphorus fertiliser; otherwise, they thrive with minimal intervention.

Grevillea Knockout NZ in Landscape Design

Grevillea Knockout seamlessly integrates into native gardens, mixed borders, and contemporary landscapes. Its compact habit and vivid colour make it perfect for pairing with other grevilleas and showy shrubs. You can combine it with other popular choices like Grevillea Bronze Rambler (Groundcover Grevillea), Grevillea Cream and Green (Cream and Green Grevillea), or groundcover options such as Grevillea Gaudichaudii (Grevillea x gaudichaudii). For contrasting textures and colours, try mixing with flowering shrubs like Hibiscus 'Blue Thunder', Azalea Elsie Lee, or Hydrangea 'Strawberry Parfait'.

Related Grevillea Varieties and Companion Shrubs

If you’re captivated by the versatility and beauty of Grevillea Knockout NZ, check out other superb grevillea cultivars for your garden. Grevillea Gold Rush (Gold Rush Grevillea) offers dazzling gold flowers, while Grevillea Red Clusters (Red Clusters Grevillea) shines with vibrant red tones. Grevilleas also mix wonderfully with other feature shrubs such as Hibiscus 'Snow White' and Rhododendron Vireya Golden Charm for extended colour and interest throughout the year.

Get Started With Grevillea Knockout NZ

Bring a knockout punch of colour and wildlife to your garden with Grevillea Knockout NZ. With its reliability, low maintenance needs, and exceptional ornamental value, this grevillea is a winning investment for any New Zealand home. Explore our range of grevilleas and companion shrubs for the perfect garden combination.


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Whether you need assistance finding the plant you’re looking for or you simply want to know more about who we are and what we do, we invite you to get in touch with us today. A member of The Plant Company team will get back in touch as soon as possible.

–The Plant Company

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