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Prostanthera cuneata (Alpine mint bush)

Beginner
skill rating
1 hour care
per year
1m
Max height
1m
Max spread
5-10 years
To maturity

Plant details

Botanical name

Prostanthera cuneata

Other names

Alpine mint bush, Peppermint bush, Australian mint bush, Mountain mint bush

Genus

Prostanthera Prostanthera

Species

P. cuneata - P. cuneata is a bushy, erect to spreading, frost hardy, evergreen shrub bearing rounded to ovate, glossy, aromatic, mid- to dark green leaves with rolled margins and, in summer, racemes of broadly tubular, white flowers with yellow- and purple-marked throats.


Prostanthera cuneata is: Evergreen

Habit

Erect, Bushy, Spreading

Awards

RHS AGM (Award of Garden Merit)

Flower

White, Spotted in Summer

Foliage

Dark-green in All seasons

How to care

Watch out for

Specific pests

Red spider mite (box and other) Red spider mite (box and other)

General care

Pruning

Pruning group 8. Prune after flowering. Avoid hard pruning.

Propagation methods

Semi-hardwood cuttings


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Where to grow

Prostanthera cuneata (Alpine mint bush) will reach a height of 1m and a spread of 1m after 5-10 years.

Suggested uses

Banks and Slopes, Beds and borders, City, Coastal, Containers, Cottage/Informal, Edging, Garden edging, Gravel, Low Maintenance, Underplanting

Cultivation

Grow under glass in loam-based compost in full light. Water moderately & feed monthly in growth. Alternatively, grow outdoors in moist but well-drained soil in a sheltered, sunny site. Needs winter protection.

Soil type

Chalky, Clay, Loamy, Sandy (will tolerate most soil types)

Soil drainage

Moist but well-drained

Soil pH

Acid, Alkaline, Neutral

Light

Full Sun

Aspect

South, West

Exposure

Sheltered

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

Hardy (H4), Tender in frost (H3)

Companion plants

We do not currently have companion plants added for this plant.

Botanical name

Prostanthera cuneata

Other names

Alpine mint bush, Peppermint bush, Australian mint bush, Mountain mint bush

Genus

Prostanthera Prostanthera

Species

P. cuneata - P. cuneata is a bushy, erect to spreading, frost hardy, evergreen shrub bearing rounded to ovate, glossy, aromatic, mid- to dark green leaves with rolled margins and, in summer, racemes of broadly tubular, white flowers with yellow- and purple-marked throats.

Foliage

Evergreen

Habit

Erect, Bushy, Spreading

Awards

RHS AGM (Award of Garden Merit)


Colour

Flower

White, Spotted in Summer

Foliage

Dark-green in All seasons


How to care

Watch out for

Specific pests

Red spider mite (box and other)

General care

Pruning

Pruning group 8. Prune after flowering. Avoid hard pruning.

Propagation methods

Semi-hardwood cuttings


Monthly care advice


Where to grow

Prostanthera cuneata (Alpine mint bush) will reach a height of 1m and a spread of 1m after 5-10 years.

Suggested uses

Banks and Slopes, Beds and borders, City, Coastal, Containers, Cottage/Informal, Edging, Garden edging, Gravel, Low Maintenance, Underplanting

Cultivation

Grow under glass in loam-based compost in full light. Water moderately & feed monthly in growth. Alternatively, grow outdoors in moist but well-drained soil in a sheltered, sunny site. Needs winter protection.

Soil type

Chalky, Clay, Loamy, Sandy (will tolerate most soil types)

Soil drainage

Moist but well-drained

Soil pH

Acid, Alkaline, Neutral

Light

Full Sun

Aspect

South, West

Exposure

Sheltered

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

Hardy (H4), Tender in frost (H3)

USDA zones

Zone 10, Zone 9, Zone 8

Defra's Risk register #1

Plant name

Prostanthera cuneata (Alpine mint bush)

Common pest name

tomato thrips

Scientific pest name

Ceratothripoides brunneus

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

Thrips present in Africa; the Caribbean and parts of Asia; frequently intercepted in the UK. Can cause significant damage to tomatoes and other crops in countries where it is present. Europe wide PRA will consider its potential to establish and cause damage.

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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This plant likes... Garden match
Soil types: Chalky, Clay, Loamy, Sandy (will tolerate most soil types) Tell us...
Soil drainage: Moist but well-drained Tell us...
Soil pH: Acid, Alkaline, Neutral Tell us...
Light: Full Sun Tell us...
Aspect: South, West Tell us...
Exposure: Sheltered Tell us...
Hardiness: Hardy (H4), Tender in frost (H3) Tell us...

DISCUSS THIS PLANT

When to move

I have 3 of these in my back garden, planted by a landscaper, but they are in the shade and I see from your site they should be in full sun. I am planning to move them to my front garden where they… read more

Brown branches

Hi,I moved to a new House that had a mint bush that was pruned by a Gardner and it kept green during 1 month, but recently some of leaves started to be yellow on some branches and the white flowers… read more

There is 1 active discussion about Prostanthera cuneata (Alpine mint bush)

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