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Marrubium vulgare (White horehound)

Beginner
skill rating
1 hour care
per year
0.5m
Max height
0.5m
Max spread
2-5 years
To maturity

Plant details

Botanical name

Marrubium vulgare

Other names

White horehound, Common horehound, Hoarhound, Hound's bane, Marrube, Marvel, Maw-roll

Genus

Marrubium Marrubium

Species

M. vulgare - M. vulgare is an upright, evergreen subshrub with ovate, wrinkled, downy, toothed, grey-green leaves and whorled clusters of tiny, white flowers in summer.


Marrubium vulgare is: Evergreen

Habit

Upright

Flower

White in Summer

Foliage

Grey-green in All seasons

How to care

Watch out for

Specific pests

Leafhoppers Leafhoppers

General care

Pruning

Cut back after flowering.

Propagation

Sow seed in a cold frame in spring or autumn. Germination tends to be erratic and slow.

Propagation methods

Division, Basal cuttings, Seed


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Where to grow

Marrubium vulgare (White horehound) will reach a height of 0.5m and a spread of 0.5m after 2-5 years.

Suggested uses

Beds and borders, City, Containers, Drought Tolerant, Foliage only, Gravel, Ground Cover, Rock

Cultivation

Best in poor, dry, well-drained, neutral to alkaline soil n sun.

Soil type

Chalky, Loamy, Sandy

Soil drainage

Well-drained

Soil pH

Alkaline, Neutral

Light

Full Sun

Aspect

South, West

Exposure

Exposed, Sheltered

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

Hardy (H4)

Companion plants

The soft white-green leaves are a good companion to plants with purple flowers

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

Botanical name

Marrubium vulgare

Other names

White horehound, Common horehound, Hoarhound, Hound's bane, Marrube, Marvel, Maw-roll

Genus

Marrubium Marrubium

Species

M. vulgare - M. vulgare is an upright, evergreen subshrub with ovate, wrinkled, downy, toothed, grey-green leaves and whorled clusters of tiny, white flowers in summer.

Foliage

Evergreen

Habit

Upright


Colour

Flower

White in Summer

Foliage

Grey-green in All seasons


How to care

Watch out for

Specific pests

Leafhoppers

General care

Pruning

Cut back after flowering.

Propagation

Sow seed in a cold frame in spring or autumn. Germination tends to be erratic and slow.

Propagation methods

Division, Basal cuttings, Seed


Monthly care advice


Where to grow

Marrubium vulgare (White horehound) will reach a height of 0.5m and a spread of 0.5m after 2-5 years.

Suggested uses

Beds and borders, City, Containers, Drought Tolerant, Foliage only, Gravel, Ground Cover, Rock

Cultivation

Best in poor, dry, well-drained, neutral to alkaline soil n sun.

Soil type

Chalky, Loamy, Sandy

Soil drainage

Well-drained

Soil pH

Alkaline, Neutral

Light

Full Sun

Aspect

South, West

Exposure

Exposed, Sheltered

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

Hardy (H4)

USDA zones

Zone 7, Zone 6, Zone 5, Zone 4, Zone 3

Defra's Risk register #1

Plant name

Marrubium vulgare (White horehound)

Common pest name

Golden twin spot; Green garden looper; Groundnut semilooper; Tomato looper

Scientific pest name

Chrysodeixis chalcites

Type

Insect

Current status in UK

Present (Limited)

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

4

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

3

General biosecurity comments

Migrant moth that poses a threat to protected cultivation Raising awareness of industry to respond to incidents & prevent transfer from imported produce should reduce risks further.

Defra's Risk register #2

Plant name

Marrubium vulgare (White horehound)

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, Loamy, Sandy Tell us...
Soil drainage: Well-drained Tell us...
Soil pH: Alkaline, Neutral Tell us...
Light: Full Sun Tell us...
Aspect: South, West Tell us...
Exposure: Exposed, Sheltered Tell us...
Hardiness: Hardy (H4) Tell us...

COMPANION PLANTS

The soft white-green leaves are a good companion to plants with purple flowers

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

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