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Acaena microphylla (New Zealand burr)

Beginner
skill rating
1 hour care
per year
0.02m
Max height
1m
Max spread
2-5 years
To maturity

Plant details

Botanical name

Acaena microphylla

Other names

Rosy-spined New Zealand burr, New Zealand burr

Genus

Acaena Acaena

Species

A. microphylla - A. microphylla is an evergreen perennial with prostrate rooting stems and small, pinnate leaves tinged bronze when young. Globular whitish flower-heads on short stems, followed by attractive reddish burrs 2.5cm in width.


Acaena microphylla is: Evergreen

Habit

Mat Forming

Awards

RHS AGM (Award of Garden Merit)

Flower

White in Summer

Foliage

Bronze in Spring; Green in All seasons

How to care

Watch out for

General care

Pruning

Pull out rooted stems to restrict spread.

Propagation methods

Division


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Where to grow

Acaena microphylla (New Zealand burr) will reach a height of 0.02m and a spread of 1m after 2-5 years.

Suggested uses

Banks and Slopes, Gravel, Ground Cover, Containers, Rock, Between paving stones

Cultivation

Grow in any well-drained soil in full sun or partial shade. Tolerates foot traffic. May be invasive in borders.

Soil type

Chalky, Loamy, Sandy

Soil drainage

Well-drained

Soil pH

Acid, Alkaline, Neutral

Light

Partial Shade, Full Sun

Aspect

North, South, East, West

Exposure

Exposed

UK hardiness Note: We are working to update our ratings. Thanks for your patience.

Hardy (H4)

Companion plants

Botanical name

Acaena microphylla

Other names

Rosy-spined New Zealand burr, New Zealand burr

Genus

Acaena Acaena

Species

A. microphylla - A. microphylla is an evergreen perennial with prostrate rooting stems and small, pinnate leaves tinged bronze when young. Globular whitish flower-heads on short stems, followed by attractive reddish burrs 2.5cm in width.

Foliage

Evergreen

Habit

Mat Forming

Awards

RHS AGM (Award of Garden Merit)


Colour

Flower

White in Summer

Foliage

Bronze in Spring; Green in All seasons

General care

Pruning

Pull out rooted stems to restrict spread.

Propagation methods

Division


Monthly care advice


Where to grow

Acaena microphylla (New Zealand burr) will reach a height of 0.02m and a spread of 1m after 2-5 years.

Suggested uses

Banks and Slopes, Gravel, Ground Cover, Containers, Rock, Between paving stones

Cultivation

Grow in any well-drained soil in full sun or partial shade. Tolerates foot traffic. May be invasive in borders.

Soil type

Chalky, Loamy, Sandy

Soil drainage

Well-drained

Soil pH

Acid, Alkaline, Neutral

Light

Partial Shade, Full Sun

Aspect

North, South, East, West

Exposure

Exposed

UK hardiness Note: We are working to update our ratings. Thanks for your patience.

Hardy (H4)

USDA zones

Zone 10, Zone 9, Zone 8, Zone 7, Zone 6

Defra's Risk register #1

Plant name

Acaena microphylla (New Zealand burr)

Common pest name

grape ground pearl

Scientific pest name

Margarodes vitis

Type

Insect

Current status in UK

Absent

Likelihood to spread to UK (1 is very low - 5 is very high)

2

Impact (1 is very low - 5 is very high)

5

General biosecurity comments

Main pathway; Vitis spp. plants for planting; already prohibited. However; further consideration of other pathways is required.

Defra's Risk register #2

Plant name

Acaena microphylla (New Zealand burr)

Common pest name

Lance nematode; Nematode; Lance

Scientific pest name

Hoplolaimus spp.

Type

Nematode

Current status in UK

Absent

Likelihood to spread to UK (1 is very low - 5 is very high)

2

Impact (1 is very low - 5 is very high)

4

General biosecurity comments

Nematode species potentially affecting a wide variety of crops; prohibition of soil likely to mitigate risk substantially; keep under review in light of interceptions or findings should they occur in the EU.

Defra's Risk register #3

Plant name

Acaena microphylla (New Zealand burr)

Common pest name

Scientific pest name

Orgyia thyellina

Type

Insect

Current status in UK

Absent

Likelihood to spread to UK (1 is very low - 5 is very high)

3

Impact (1 is very low - 5 is very high)

3

General biosecurity comments

Polyphagous moth pest from Eastern Asia which could be damaging to broadleaf and coniferous species if introduced to the UK; as well as having human health impacts. The main pathway is likely to be on goods (including non-plant material) imported from Eastern Asia and awareness raising with the main industry sectors is recommended.

About this section

Our plants are under greater threat than ever before. There is increasing movement of plants and other material traded from an increasing variety of sources. This increases the chances of exotic pests arriving with imported goods and travellers, as well as by natural means. Shoot is working with Defra to help members to do their part in preventing the introduction and spread of invasive risks.

Traveling or importing plants? Please read "Don't risk it" advice here

Suspected outbreak? Click here for contact details to report to the relevant authority.

Date updated: 7th March 2019 For more information visit: https://planthealthportal.defra.gov.uk/

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August 2012 (27/08/2012)

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This plant likes... Garden match
Soil types: Chalky, Loamy, Sandy Tell us...
Soil drainage: Well-drained Tell us...
Soil pH: Acid, Alkaline, Neutral Tell us...
Light: Partial Shade, Full Sun Tell us...
Aspect: North, South, East, West Tell us...
Exposure: Exposed Tell us...
Hardiness: Hardy (H4) Tell us...

GARDENS WITH THIS PLANT

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