Name: The Plant Company
Address: 284 Meeanee Road, Meeanee, Napier, 4112, New Zealand
Telephone: 0800 843 752
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trimming flax bushes

Trimming flax bushes is an essential task for anyone looking to maintain the health, appearance, and longevity of their flax plants. Whether you're caring for well-established gardens or newly planted specimens, proper trimming keeps your NZ flax varieties looking tidy, encourages fresh growth, and can significantly reduce pest problems. In this guide, we'll cover the best time and techniques for trimming flax bushes, and offer expert tips to help you get the most from popular cultivars, including [Phormium 'Moonraker' (Moonraker Flax)](/shop/product/flaxes/phormium-moonraker), [Phormium 'Stripy Mist'](/shop/product/flaxes/phormium-stripy-mist), and more.

Phormium 'Evening Glow'

Phormium 'Evening Glow' is a variety of Flax that produces long and broad, sword-like leaves that are coloured various shades of pink and red with a bronze margin. This variety grows to 1.3 m tall and the same wide with a tidy and compact habit. Phormium 'Evening Glow' is a versatile plant that makes a fantastic addition to mixed plantings and borders, and is well-suited for coastal gardens. It can also be used to accentuate water features, such as ponds and streams, or grown around pool and barbecue areas.

Buy Phormium 'Evening Glow'

From $20.93

Suited to regions: All regions

Plant type: Flaxes

Height: 1.30 m

Spread: 1.30 m

Flowering time: Summer

Tolerances: Coastal, Extended dry periods, Hardy, Wet, Wind

Garden uses: Banks, Living areas, Parks, Ponds, Pool areas, Specimen

Garden styles: Architectural, Backyard, City & Courtyard, Coastal, Frontyard, Japanese, Modern, Native, Riparian

Phormium 'Stripy Mist'

Phormium Stripy Mist is a popular NZ native dwarf flax that features striking green leaves with a chocolate brown centre. It grows as a very tidy clump to about 40 cm tall and the same wide. Phormium Stripy Mist is commonly added to mixed and border plantings, included in coastal gardens, planted around outdoor living areas, or maintained in a container.

Buy Phormium 'Stripy Mist'

From $20.93

Suited to regions: All regions

Plant type: Flaxes

Height: 40 cm

Spread: 40 cm

Tolerances: Coastal, Extended dry periods, Hardy, Wind

Garden uses: Banks, Borders, Containers, Living areas, Paths & Steps, Patios, Ponds, Pool areas

Garden styles: Architectural, Backyard, City & Courtyard, Coastal, Frontyard, Mediterranean, Modern, Native

Why Trim Your Flax Bushes?

New Zealand flax bushes, or Phormiums, are prized for their bold foliage and year-round structure. Over time, older leaves may brown and arch toward the ground, detracting from your garden’s look and potentially sheltering pests. Trimming flax bushes keeps the plant healthy by removing dead material and allows for new, vibrant leaves to develop. Regular maintenance also supports the unique coloration of cultivars like Phormium 'Purple Haze' (Purple Flax Plant), whose deep burgundy leaves stand out best after trimming.

When to Trim Flax Bushes

The ideal time for trimming flax bushes is late winter to early spring, right before new growth begins. This timing minimises stress on the plant and keeps your garden looking its best throughout the active growing season. However, you can safely remove individual dead or damaged leaves at any time. Just avoid heavy cutting in mid-summer, as flax plants are more vulnerable to shock during intense heat.

How to Trim Flax Bushes

Choose clean, sharp secateurs or loppers for a crisp cut that won’t shred the leaf.
Remove any brown, split, or dying leaves at the base, pulling them cleanly away from the plant.
Work around the plant, always cutting flush near the base, but avoid cutting through healthy green fans as this can impact regrowth.
Tidy up flowering stalks once blooms fade, snipping them off low to the ground.
Dispose of trimmed material—flax leaves are tough and slow to break down, so they’re best removed or used for weaving projects.

Trimming Tips for Popular Flax Varieties

Each cultivar can have slightly different needs. For instance, Phormium 'Evening Glow' benefits from regular tidying to keep its vibrant red hues vivid, while variegated types like Phormium 'Stripy Mist' maintain their striking contrast with routine grooming. Bush flax alternatives such as Astelia fragrans (Bush Flax) can also be trimmed in the same way as Phormium, though their softer leaves are usually easier to manage.

Ongoing Care for Healthy Flax

After trimming flax bushes, water the plant well and add a slow-release fertiliser if growth is sluggish. Mulching around the base can help retain moisture and suppress weeds, further supporting healthy regrowth. With the right care and timely trimming, your flax bushes will remain a standout feature in any New Zealand garden.

Contact us

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.