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Tall Perennial Plants

If your beds are lacking height, you need tall perennial plants! Growing up to 2m in some cases, these striking plants create a colourful backdrop to any floral display, helping you make the most of your vertical space even in a small garden. Tall perennials look fantastic contrasted with green foliage, in a layered herbaceous border or in containers on their own.

Cottage Garden Style

The Cottage Garden aesthetic is all about wild beauty and contrasting colours. For this theme Hollyhocks, Lupins and Delphiniums are practically compulsory. Team these towering plants with Poppies, Penstemons, Peonies and Echinacea to complete the look - bees and butterflies will love you for it.

Contemporary Colourblock

Colourblocking is the art of using plants in variations of the same colour to create a coordinated and contemporary looking display. The key is including different heights, textures and shapes. For a stylish white theme, use Delphinium, Lupin, "https://www.rootsplants.co.uk/products/50cm-peony-krinkled-white-3l-pot">Peony, Aubrieta and Acanthus. Alternatively, go bold with reds or blues! This look is particularly effective alongside paths, where it creates an illusion of space.

The Tallest Tall Perennials

The world record for a Hollyhock is 13ft (almost 4 metres) tall. Although we can’t guarantee your plants will reach that height, if you’re seeking the tallest perennials, look no further. Hollyhocks usually reach 1-1.5m, with Delphiniums a close second at 1m. Almost reaching the dizzy heights are Lupins (90cm) and Penstemons (75cm), all of them perfect for growing next to walls or fences. If you do raise a record breaker, send us a picture!

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Penstemon 'Garnet' 2L Pot
1 option from £12.00

Rich wine-red flowers on tall stems

  • Deep red flowers on tall upright stems
  • Flowers from July to November
  • Ideal for the middle or back of a border
  • Perfect for Pollinators
Gladioli 'Nori' 2L Pot
1 option from £12.00

Tall stems of Violet blooming all Summer long

  • Violet flowers with Creamy White inners
  • Flowers right from June to October
  • Perfect to add height to borders or pots
  • Attractive to pollinators
Escallonia 'Iveyi' 3L Pot
1 option from £15.00

Compact, Summer flowering evergreen

  • Five petalled Snowy White flowers
  • Flowers from May to August
  • Ideal as hedging or a specimen plant
  • Easy maintenance, compact and attractive shrub
Penstemon 'Sour Grapes' 2L Pot
1 option from £12.00

Cottage Garden must-have in rich Purple

  • Deep purple flowers on tall upright stems
  • Flowers from July to November
  • Adds height to a Cottage Garden border
  • Attracts bees and butterflies
Cistus 'Creticus' 3L Pot
1 option from £20.00

Clustering pink Rock Rose

  • Large bowl shaped Pink and Purple flowers
  • Flowering from May to July
  • Perfect for the front of borders or in pots
  • Easy maintenance perennial plant
Achillea 'Sunny Seduction' | 10.5cm Pot
1 option from £6.00

Let sunshine bloom

  • Big blooms of butter yellow
  • Fantastic contrast with deep green foliage
  • Add height and colour to your bed borders
  • Fully hardy through the most severe winters
Campanula 'Takion Blue' | 1L Pot
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Campanula 'Takion Blue' | 1L Pot
0 options from £8.00

Big and bold leaves all year with a stunning summer floral display

  • Unique outward facing bell-flowers in purple
  • Great for the front of borders to cover space
  • A superb feature for patio pots
  • Brilliant plant to support local bee populations
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Euphorbia 'Silver Edge' 2L Pot
0 options from £13.00

Silver tones for even shady gardens

  • Beautiful Lemon Yellow flowers
  • Flowers in May and June
  • Shade loving perennial plant ideal for borders
  • Very easy to grow and care for
Euphorbia 'Ascot Rainbow' 2L Pot
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Euphorbia 'Ascot Rainbow' 2L Pot
0 options from £13.00

Turn your garden into an all-year-round exotic paradise

  • Masses of green and red flowers in early summer
  • Flowers in May and June
  • Ideal for the middle of a border
  • RHS Award of Garden Merit winner
Penstemon 'Dark Towers' | 1L Pot
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Penstemon 'Dark Towers' | 1L Pot
0 options from £8.00
Rated 5.0 out of 5
Based on 1 review

Dark towers with bright lilac purple lights

  • Profusions of delicate, lilac flowers from midsummer
  • Stunning plum-purple foliage adds extra aesthetic interest
  • Flowers all the way from July to November
  • Create a tropical aesthetic for your garden
Campanula 'Takion Blue' | 3L Pot
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Campanula 'Takion Blue' | 3L Pot
0 options from £15.00

Big and bold leaves all year with a stunning summer floral display

  • Unique outward facing bell-flowers in purple
  • Great for the front of borders to cover space
  • A superb feature for patio pots
  • Brilliant plant to support local bee populations
Hosta 'Night Before Christmas' 3L Pot
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Hosta 'Night Before Christmas' 3L Pot
0 options from £15.00

Glossy heart-shaped foliage

  • Glossy dark heart-shaped leaves
  • Blue flowers from June to August
  • Ideal for a shady border
  • Exotic looking perennial
Hosta 'Praying Hands' 3L Pot
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Hosta 'Praying Hands' 3L Pot
0 options from £15.00

Beautifully unique upright Hosta

  • Tightly folded Dark Green leaves
  • Lilac Blue flowers from June to August
  • Fabulous in pots
  • Eyecatching foliage perennial
Hosta 'Sugar & Spice' 3L Pot
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Hosta 'Sugar & Spice' 3L Pot
0 options from £15.00

Fabulous foliage with fragrant flowers

  • Moss green leaves with a rippled edge
  • Fragrant Blue flowers
  • Shade loving border plant
  • Colour and texture all year round
Hosta 'Blue Cadet' 3L Pot
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Hosta 'Blue Cadet' 3L Pot
0 options from £15.00

Blue all year with a hint of purple in the summer

  • Huge, vibrant blue leaves with a hint of silver
  • Lavender Purple flowers from June to August
  • Create an exotic aesthetic for your garden
  • Ideal for pots and borders
Lupin Legendary 'Shades of Blue' | 1L Pot
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Lupin Legendary 'Shades of Blue' | 1L Pot
0 options from £8.00
Rated 5.0 out of 5
Based on 1 review

Towers of sweet summer blue

  • Stunning blue and violet tones
  • Create a Cottage Garden aesthetic
  • Towers 90cm tall–perfect for the back of borders
  • Buy a mature plant ready to shoot up!
Delphinium 'Faust' | 1L Pot
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Delphinium 'Faust' | 1L Pot
0 options from £10.00

Blue flowers climbing towards blue skies

  • Produces blooms of intense berry blue
  • RHS Award of Garden Merit Winner
  • A showstopper in any garden space
  • Add height and colour to your beds and borders
Delphinium 'Highlander Purple Surprise' | 1L Pot
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Delphinium 'Highlander Purple Surprise' | 1L Pot
0 options from £10.00

Spires of Dahlia-like purple and white flowers

  • Purple petals fade into white on one flower
  • Profusions of Dahlia-like flowers cover towering spires
  • An excellent feature for cut-flower displays
  • A classic cottage garden plan
Delphinium 'Highlander Bolero' | 1L Pot
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Delphinium 'Highlander Bolero' | 1L Pot
0 options from £10.00

Unique purple double delphinium flowers in fantastic towers

  • Stunning spires of two-toned frilly double flowers
  • Beautiful blend of purple, blue white colours
  • Add height and colour to your beds and borders
  • Makes an excellent cut flower for floral displays
Delphinium 'Highlander Flamenco' | 1L Pot
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Delphinium 'Highlander Flamenco' | 1L Pot
0 options from £10.00

Spires of Dahlia-like vibrant purple flowers

  • Flowers all the way through summer
  • Flowers all the way through summer
  • Self-supporting so no staking required!
  • A classic cottage garden plant
Delphinium 'Moonlight' | 1L Pot
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Delphinium 'Moonlight' | 1L Pot
0 options from £10.00

A purple and blue glow in the heat of summer

  • A fascinating mix of purple, blue and green
  • Create a classic cottage garden aesthetic
  • Flowers throughout the entire Summer
  • Perfect for the back of borders or beds
Echinops 'Blue Globe' | 10.5cm Pot
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Echinops 'Blue Globe' | 10.5cm Pot
0 options from £6.00

Grow your own summer-time floral fireworks

  • Amazing lilac floral fireworks in the sky
  • Flowers from July to August
  • Adds superb height to your beds and borders
  • Perfect plant for the back of beds and borders
Bleeding Heart Plant 'Spectabilis Valentine' | Dicentra | 3L Pot
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Bleeding Heart Plant 'Spectabilis Valentine' | Dicentra | 3L Pot
0 options from £15.00
Rated 5.0 out of 5
Based on 1 review

Romance flowering from Spring

  • Red heart-shaped flowers with a drip of white
  • RHS Award of Garden Merit winner
  • Blooms in Spring early in the growing season
  • Can be grown in the shadier parts of your garden
Echinacea 'Sombrero Rose' | 1L Pot
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Echinacea 'Sombrero Rose' | 1L Pot
0 options from £15.00

Powerfully pink blooms from a super tough plant

  • Magenta pink flowers with stunning cone centres
  • Flowers all summer long
  • Create a wild flower meadow aesthetic
  • Great plant for the middle of borders and beds

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