shrub

Mirror Bush

Coprosma repens

The Story

Plant Bio

Coprosma repens, the mirror bush, is a dense evergreen shrub native to New Zealand that grows from ten to nearly one hundred feet tall in the wild, though it remains much smaller in garden cultivation. The plant is defined by its highly polished, leathery dark green leaves that reflect light like glass, paired with insignificant greenish flowers that appear from spring to summer.

This species exhibits exceptional tolerance to salt spray and harsh maritime winds, often adopting a sprawling or prostrate growth habit when exposed on coastal cliffs. In mild climates, it functions as an aggressive grower with a robust surface root system that can disrupt nearby paving if planted too close.

Uses & Benefits:

Ornamental UsesGrown for its exceptionally glossy, mirror-like foliage that provides year-round structure and color.
Practical UsesFunctions as an excellent windbreak or privacy screen in coastal areas due to its extreme salt and wind tolerance.
Ecological BenefitsProvides dense structural cover and nesting sites for local birds, while the berries are occasionally eaten by frugivorous birds.

Essentials

At a Glance

Plant Type

Shrub

Height

118"

Width

59"

Light

Full Sun, Partial Sun

Zones

9, 10

Water

Low

Humidity

High

Lifespan

Perennial

Native To

New Zealand

Toxicity

Non-toxic

Planting

How to Grow

  1. Select a planting site in full sun to partial shade with well-drained soil, as wet roots will cause decline.
  2. Dig a hole twice as wide as the root ball and set the plant at the same depth it was growing in the container.
  3. Water thoroughly at planting and maintain regular moisture until the root system is fully established.
  4. Apply a light layer of organic mulch around the base to conserve moisture, keeping it clear of the main stem.

Pro Tip

Prune to shape annually or semi-annually, but avoid cutting deep into bare old wood lacking latent buds, which results in slow and patchy regrowth.

Keep It Thriving

Care Guide

Do

  • Prune annually to maintain a dense, compact hedge form.
  • Ensure the soil drains rapidly to prevent root rot.
  • Provide protection or temporary cover during severe or prolonged freezes.

Don't

  • Do not overwater once established, as the plant is highly drought-tolerant.
  • Do not plant near paved pathways or patios where the aggressive surface roots can lift hardscaping.
  • Do not apply heavy fertilizers, as a light spring application is only needed if growth is sluggish.

Seasonal Care Calendar

TaskJanFebMarAprMayJunJulAugSepOctNovDec
Fertilize
Pest Check
Propagate
Prune

Watch Out For

Pests & Diseases

Common Pests

Common Diseases

In the Garden

Landscape Uses & Companions

Landscape Uses

HedgePrivacy ScreenCoastal GardenWindbreakContainer Planting

Multiply

Propagation Methods

Good to Know

Common Questions

Mirror Bush questions

What zones can Mirror Bush grow in?

Mirror Bush is hardy in USDA Zones 9–10. Inside that range it survives winter in the ground; outside it, grow it as an annual or a container plant you protect.

Is Mirror Bush deer resistant?

Not reliably. Deer may browse Mirror Bush, especially tender spring growth — plan on repellents or fencing where pressure is high.

When does Mirror Bush bloom?

Mirror Bush typically blooms in spring through summer. Exact timing shifts a week or two with your zone — Sow's bloom calendar maps it to your garden.

Does Mirror Bush need full sun?

Mirror Bush does best in full sun to part shade. In hot climates, afternoon shade keeps blooms fresher longer.

Is Mirror Bush drought tolerant?

Yes — once established (usually after the first full season), Mirror Bush handles dry spells with minimal watering. Water deeply its first year to build the root system that makes that possible.

Keep exploring

Explore the genus

Hardy in your zone?

Grow Mirror Bush with confidence

See it in a design of your actual yard, get zone-matched care reminders, and track it season by season in your garden journal.