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|1 hour care
Botanical name: Verbena bonariensis
Other names: Purple top, Argentinian vervain, Tall verbena, South American vervain, Verbena patagonica
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
Flower: Purple in Summer; Purple in Autumn
Foliage: Dark-green in Summer; Dark-green in Autumn
Habit: Tall, Upright
Awards: RHS AGM (Award of Garden Merit)
Plant with: Stipa gigantea (Golden oats), Chasmanthium latifolium (North America wild oats), Stipa gigantea 'Gold Fontaene' (Golden oats 'Gold Fontaene'), Nicotiana sylvestris (Flowering tobacco), Lychnis chalcedonica (Maltese cross), Helianthus annuus 'Pastiche' (Sunflower 'Pastiche'), Verbena 'Moon River' (Vervain 'Moon River'), Verbena 'La France' (Verbena 'La France'), Anemone hupehensis 'Splendens' (Japanese anemone 'Splendens')
Pests: Generally pest free
Diseases: Generally disease free
Pruning: Cut down once flowering is finished.. REGISTER to read more...
Propagation methods: Seed. REGISTER to read more...
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. In cold areas, protect with a dry winter mulch.
|This plant likes...||Garden match|
|Soil types:||Chalky, Clay, Loamy, Sandy (will tolerate most soil types)|
|Soil drainage:||Moist but well-drained, Well-drained|
|Soil pH:||Acid, Alkaline, Neutral|
|Hardiness:||Tender in frost (H3), Hardy (H4)|
Discuss Verbena bonariensis (Purple top) with other Shoot members.
Re: Purple top (Verbena bonariensis) - my instructions state that they
should be 'cut down' once flowering has finished.
Last summer i didn't prune/cut back/dead head at all.
So this spring they looked a bit of a sorry state!
This week at last I 'dead headed' them, removed some dead leaves and cut
back the tall stems but only to remove broken parts of stems or obviously
'dead' parts - I didnt cut down right to the base.
They still look a bit of a mess but there is now new growth appearing both
in form of completely new stems AND new branches from the existing stems
left over from last year.
The question is in an ideal world, going back to last summer when
flowering had finished, should i have cut ALL stems down right to the base
- hence starting anew this spring. Would that achieve better results in
the long term or would that have been over doing it?
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 grew it with Oxeye Daisies and the border was full of bees, hoverflies and butterflies.
I planted these in November, now they are shooting both from the base and from all up the previous growth - hasn't been frosted at all. Should I cut it back down to the ground now (late Jan)?
"A great big THANK YOU to Shoot. Keep up the good work."
John, County Durham