Thompson & Morgan

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Perennial & Biennial Plants


In this range you'll find an impressive selection of perennial plants and biennial plants, which are perfect for beginners and experienced gardeners alike. Also known as herbaceous plants, perennial plants live for 2 or more years and flower every year. Biennial plants live for up to 2 years, flowering profusely in their second year before setting seed and dying. Both are great for beds and spring displays and there are many delightful plants to choose from. Use the selections in the left menu to select the right plants for your garden.



We have found 21 products.
 

Verbena bonariensis 'Lollipop'

Glandularia, Verbena patagonica

 Customer Rating
  • Unique mini Verbena for your patio
Like its parents, Verbena bonariensis 'Lollipop' boasts the same tight clusters of floating purple flowers, but has short, compact stems that reach only half the height. Well shaped, uniform plants with an open airy habit attract butterflies to their glowing blooms from June to September. This fabulous hardy dwarf verbena is perfectly proportioned for patio pots and the front of borders where it creates a wonderful delicate airy effect. Height and spread: 60cm (24").
More info
    • 3 jumbo plug plants

    • Despatch: By end of June 2015
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    • £9.99
    • 6 jumbo plug plants

    • Despatch: By end of June 2015
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    • £14.99

Nepeta 'Patchwork Mixed' (Garden Ready)

Catmint

  • Splashes of colour, perennial too!
You can plant our garden-ready plants straight into the garden when they arrive - it couldn’t be easier! There’s no need to re-pot them or to grow them on - just plant and water them. Pretty soon you’ll be enjoying their wonderful displays of colour. If you haven’t got the time or the room to grow plants from small seedlings, then these are for you! You’re sure to get great results because we’ve done the crucial early growing for you. Just plant, water and enjoy!

A new twist on a classic cottage garden plant! Nepeta ‘Patchwork Mixed’ has neat, compact growth that makes it perfect for summer bedding and patio pots. Catmint is well loved by gardeners and their cats for its sweet, pungent aroma and hazy pink and blue flowers. This hardy little perennial has a loose, relaxed habit that makes it perfect for creating soft, informal displays. Height and spread: 40cm (16").

 

More info
    • 30 nepeta garden-ready plants

    • Despatch: By end of June 2015
    • Buy 2 packs for just £25  
    • £14.99

Salvia x jamensis 'Hot Lips'

Sage

Spice up your summer patio pots with Salvia ‘Hot Lips’. Naturally bushy plants boast eye-catching flower spikes with open-mouthed, bicolour blooms. In particularly hot weather look out for individual flowers in solid red or solid white. The aromatic foliage has a fine blackcurrant fragrance that only adds to its charm. This showy ornamental sage is perfect for cottage garden borders and containers, or incorporated into bedding schemes for a vibrant summer display. Although perennial, this half hardy Salvia will appreciate some protection from winter weather. Height: 90cm (35"). Spread: 60cm (24"). More info
    • 5 Postiplug plants

    • Despatch:
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    • £9.99
    • Out of stock
    • 10 Postiplug plants

    • Despatch:
    • SAVE £4.99  
    • £19.98 £14.99
    • Out of stock

Nepeta 'Patchwork Mixed'

Catmint

  • Splashes of colour, perennial too!
A new twist on a classic cottage garden plant! Nepeta ‘Patchwork Mixed’ has neat, compact growth that makes it perfect for summer bedding and patio pots. Catmint is well loved by gardeners and their cats for its sweet, pungent aroma and hazy pink and blue flowers. This hardy little perennial has a loose, relaxed habit that makes it perfect for creating soft, informal displays. Height and spread: 40cm (16").
More info
    • 24 plug plants

    • Despatch:
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    • £12.99
    • Out of stock
    • 48 plug plants

    • Despatch:
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    • £17.99
    • Out of stock

Monarda didyma 'Cranberry Lace' (Large Plant)

Bergamot

Bergamot are unusual-looking perennials that have aromatic foliage and whorls of spidery blooms made up of tubular petals. Monarda ‘Cranberry Lace’ is a compact, short Bergamot with bright pink, and a built-in resistance to powdery mildew problems.

Bergamot is perfect for cottage garden borders where it can quickly form dense, easy to grow clumps. Bergamot flowers are great for the wildlife garden, as they are loved by bees. Height: 90 cm (36"). Spread: 45cm (18").


Culinary note: Some parts of these flowers are edible. For more details about edible flowers click here.

More info
    • 1 x 1 litre potted plant

    • Despatch: By end of June 2015
    •  
    • £9.99
    • 2 x 1 litre potted plants

    • Despatch: By end of June 2015
    •  
    • £16.99

Campanula 'Mixed'

Bellflower

  • Exclusive collection
A robust mix of Campanula plants bearing semi-double, cup-shaped blooms in shades of white, purple and blue. These pretty flowers are borne in abundance on tall, slender stems from May to July, making a wonderful addition to the middle of perennial borders. Campanula 'Mixed' is ideal for creating drifts of summer colour in cottage garden borders where it will return year after year. Height: 75cm (30"). Spread: 45cm (18").
More info
    • 3 x 7cm potted plants

    • Despatch: By end of June 2015
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    • £19.99
    • 6 x 7cm potted plants

    • Despatch: By end of June 2015
    • SAVE £14.99  
    • £39.98 £24.99

Chrysanthemum x hortorum 'Anastasia' (Large Plant)

Guarantee autumn colour in your garden with the Winter Aster; from September to November, the neat plants will play host to dusky pink, chrysanthemum-like flowers.

Plant Chrysanthemum × hortorum 'Anastasia' into the border or into mixed patio containers with Ivy, Heuchera and other foliage plants. The end of summer does not have to mean the end of colour in your garden or on the patio! Height and Spread: 60cm (24").

More info
    • 1 x 1 litre potted chrysanthemum plant

    • Despatch: By end of June 2015
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    • £9.99
    • 2 x 1 litre potted chrysanthemum plants

    • Despatch: By end of June 2015
    •  
    • £16.99

Melittis 'Royal Velvet Distinction' (Large Plant)

Bastard Balm

Melittis 'Royal Velvet Distinction' is an easy to grow, hardy plant for those damp shady corners of the garden. The aromatic foliage is honey-scented and, along with the orchid-like pink and white flowers, attracts bees and butterflies to the garden. Melittis is very easy to establish, and makes robust ground cover for woodland gardens and shaded borders. Height: 70cm (28"). Spread: 50cm (20"). More info
    • 1 x 1 litre potted plant

    • Despatch: By end of June 2015
    •  
    • £9.99
    • 1 x 2 litre potted plant

    • Despatch:
    •  
    • £9.99
    • Out of stock
    • 2 x 1 litre potted plants

    • Despatch: By end of June 2015
    •  
    • £16.99
    • 2 x 2 litre potted plants

    • Despatch:
    •  
    • £16.99
    • Out of stock

Achillea filipendulina 'Coronation Gold' (Large Plant)

Yarrow

One of the very best herbaceous perennials for a mixed border, Achillea is easy to grow and a low maintenance plant. ‘Coronation Gold’ is a popular variety, which has flat heads of golden-yellow flowers over a long summer period.

Achillea loves a hot, sunny border and will add colour to your summer garden for a minimum of effort. The flower heads are incredibly eye-catching and plants are quick to establish, filling a gap in the border. Height: 1m (39"). Spread: 50cm (20").

More info
    • 1 x 1 litre potted achillea plant

    • Despatch: By end of June 2015
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    • £9.99
    • 2 x 1 litre potted achillea plants

    • Despatch: By end of June 2015
    •  
    • £16.99

Agastache 'Summer Glow' (Large Plant)

Giant Hyssop

This fantastic perennial is one of the best slug-proof plants for your garden. Slugs and snails dislike the felted, minty-fragranced foliage, so plants are left completely untouched.

Agastache are compact, evergreen plants, with colour-changing flowers, which are loved by bees and butterflies. Agastache plants are also very drought tolerant, and are can be grown in the border or patio pots. Height: 60cm (24"). Spread: 45cm (18").


Culinary note: Some parts of these flowers are edible. For more details about edible flowers click here.

More info
    • 1 x 1 litre potted agastache plant

    • Despatch: By end of June 2015
    •  
    • £9.99
    • 2 x 1 litre potted agastache plants

    • Despatch: By end of June 2015
    •  
    • £16.99

Ajuga reptans 'Catlins Giant' (Large Plant)

Bugle

Bugle is an easy to grow, spreading evergreen plant, which is perfect for a difficult shady corner. Ajuga ‘Caitlin’s Giant’ is a robust, low-maintenance variety with glossy leaves, and erect spikes of purple-blue flowers during the summer.

Ajuga are ideal for moist, shady corners of the garden and are maintenance-free. Plants are tight and mat-forming, and will stop weeds coming through their tough blanket of foliage and flowers. Height: 50cm (20"). Spread up to 1m (39").

More info
    • 1 x 1 litre potted ajuga plant

    • Despatch: By end of June 2015
    •  
    • £9.99
    • 2 x 1 litre potted ajuga plants

    • Despatch: By end of June 2015
    •  
    • £16.99

Allium 'Gladiator' (Large Plant)

Ornamental Onion

Hundreds of starry purple blooms with delicate silvery tips form these incredible allium flower heads. The magnificent, spherical blooms of Allium ‘Gladiator’ are up to 15cm (6") across! Flowering only once in a season, the blooms are followed by skeletal seedheads for a spectacular autumn display. Undemanding and easy to grow, these purple alliums are guaranteed to add the ‘wow’ factor to borders and cut flower arrangements. Height: 120cm (48"). Spread: 15cm (6"). More info
    • 1 x 2 litre potted allium plant

    • Despatch: By end of June 2015
    •  
    • £9.99
    • 2 x 2 litre potted allium plants

    • Despatch: By end of June 2015
    •  
    • £16.99