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Verbena bonariensis (Purple top)

Beginner
skill rating
1 hour care
per year
2.5m
Max height
0.5m
Max spread
2-5 years
To maturity

Plant details

Botanical name

Verbena bonariensis

Other names

Purple top, Argentinian vervain, Tall verbena, South American vervain, Verbena patagonica, Verbena bonariensis 'Buenos Aires' , Verbena brasiliensis

Genus

Verbena Verbena

Species

V. bonariensis - V. bonariensis is an herbaceous perennial, with clusters of small, purple flowers from summer to autumn held on tall stems. Leaves are narrow and sparse.


Verbena bonariensis is: Deciduous

Habit

Tall, Upright

Awards

RHS AGM (Award of Garden Merit)

Flower

Purple in Summer; Purple in Autumn

Foliage

Dark-green in Summer; Dark-green in Autumn

How to care

Watch out for

Pests

Generally pest free

Diseases

Generally disease free

General care

Pruning

Cut back after flowering.

Propagation methods

Seed


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Where to grow

Verbena bonariensis (Purple top) will reach a height of 2.5m and a spread of 0.5m after 2-5 years.

Suggested uses

Prairie planting, Beds and borders, Gravel

Cultivation

Grow in moist, well-drained, moderately fertile soil in full sun. Protect with a dry winter mulch in areas with cold winters.

Soil type

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

Soil drainage

Moist but well-drained, Well-drained

Soil pH

Acid, Alkaline, Neutral

Light

Full Sun

Aspect

South

Exposure

Exposed

UK hardiness

Tender in frost (H3), Hardy (H4)

Companion plants

Botanical name

Verbena bonariensis

Other names

Purple top, Argentinian vervain, Tall verbena, South American vervain, Verbena patagonica, Verbena bonariensis 'Buenos Aires' , Verbena brasiliensis

Genus

Verbena Verbena

Species

V. bonariensis - V. bonariensis is an herbaceous perennial, with clusters of small, purple flowers from summer to autumn held on tall stems. Leaves are narrow and sparse.

Foliage

Deciduous

Habit

Tall, Upright

Awards

RHS AGM (Award of Garden Merit)


Colour

Flower

Purple in Summer; Purple in Autumn

Foliage

Dark-green in Summer; Dark-green in Autumn


How to care

Watch out for

Pests

Generally pest free

Diseases

Generally disease free

General care

Pruning

Cut back after flowering.

Propagation methods

Seed


Monthly care advice


Where to grow

Verbena bonariensis (Purple top) will reach a height of 2.5m and a spread of 0.5m after 2-5 years.

Suggested uses

Prairie planting, Beds and borders, Gravel

Cultivation

Grow in moist, well-drained, moderately fertile soil in full sun. Protect with a dry winter mulch in areas with cold winters.

Soil type

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

Soil drainage

Moist but well-drained, Well-drained

Soil pH

Acid, Alkaline, Neutral

Light

Full Sun

Aspect

South

Exposure

Exposed

UK hardiness

Tender in frost (H3), Hardy (H4)

USDA zones

Zone 10, Zone 9, Zone 8, Zone 7

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Early July 2018

Verbena bonariensis (Purple top)

Verbena bonariensis (Purple top) with sweet pea

(09/10/2011)

Verbena bonariensis (Purple top)

Taken Oct 2010 (25/10/2010)

Close up taken Oct 2010 (25/10/2010)

(06/06/2011)

(26/08/2011)

(09/10/2011)

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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, Well-drained Tell us...
Soil pH: Acid, Alkaline, Neutral Tell us...
Light: Full Sun Tell us...
Aspect: South Tell us...
Exposure: Exposed Tell us...
Hardiness: Tender in frost (H3), Hardy (H4) Tell us...

DISCUSS THIS PLANT

I have a very tall plant, which is about 7 ft tall, when the blooms die off, can I cut it down to a sensible height or will this kill it?

I have a very tall plant of verbena bonariensis, which is about 7 ft+ tall, when the blooms die off, can I cut it down to a sensible height or will this kill it? read more

Have I lost my Verbena bonariensis this year?

Hi - I had a beautiful Verbena bonariensis last year and cut it back quite hard after flowering. We are now in May and I only have a very few new leaves appearing from the old stump despite regular… read more

Cold area mean what in temp?

Hi..when you say cold area could you explain more..one persons cold area is not anothers? I live in Devizes Wiltshire? thanks read more

Cutting back

Re: Purple top (Verbena bonariensis) - my instructions state that theyshould be 'cut down' once flowering has finished.Last summer i didn't prune/cut back/dead head at all.So this spring they looked… read more

Verbena bonariensis

This is a must have plant if like me you like a cottage style, wildlife friendly border. Although it can get rather tall - mine was about 2m last year - its slender stems are fairly see through. I… read more

There are 26 active discussions about Verbena bonariensis (Purple top)

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