With more than 700 flowers, seeds, bulbs and accessories; Capital Gardens is the perfect place to kick-start your garden or flowerbed, or find the perfect flower to complement your existing collection. Stocking products from trusted and respected growers and brands including Thompson & Morgan and Suttons; our range is full of high quality additions for your back garden and home

Our A-Z flowers page is the perfect place to start your search if you have a specific seed or genus in mind for your garden. From Achillea to Zinnia, our comprehensive range of flowers can help you find your perfect garden additions.

Annual Seeds

Forming the backbone of a beautiful garden; annual plants can offer beautiful flowers throughout the entirety of the year. Providing year on year success and beauty, the Capital Gardens range of annual flowers is incredibly comprehensive and diverse – helping complement a wide range of garden styles.

Annual flowers are particularly helpful for people who want their garden looking beautiful throughout the year but don’t want to tend to plants and flowers regularly. Strong and robust, the annuals can survive the British winter, thriving until their lifespan reaches its natural conclusion.

Trees and Shrubs 

Alongside the huge range of flowers, we also stock a great selection of trees and shrubs – perfect for medium and large sized back gardens. From impressive bonsai conifers to exotic birds of prey; Capital Gardens can help you cultivate larger plants and garden additions.

If you require any help or assistance selecting the perfect flowers and seeds for your garden or your home, the Capital Gardens team are available to help with any questions or concerns you may have. Simply give us a call on 01442 875 037 and we will endeavour to help in any way we can.

  • Grass Ornamental Hare’s Tail

    Grass Ornamental Hare’s Tail

    Soft fur-like Grass Hare’s Tail have silky heads with true beauty. The plant is a grey/green colour featuring narrow leaf blades. Plant this bulb in direct  sunlight in patios, cottage gardens, cut flower gardens and costal gardens. The plant has a easy aftercare just make sure it is well watered with fresh water to keep it healthy all year round.

    • Ideal for patio, cottage gardens, cut flower garden and coastal gardens
    • Position in full sunlight
    • Height up to 45cm
    • Spread up to 25cm
    • Easy aftercare
    • Flowering time between June-August
    • Sowing months March-April

    This product is available at the following Garden centres:
    • Alexandra Palace Garden centre
    • Neals Nursery Garden centre
    • Woods of Berkhamstead Garden centre

  • Sweet William Kaleidoscope Mix

    Sweet William Kaleidoscope Mix

    Extremely unusual multi stemmed plants not only has a sweet scent but also bears beautiful full blooms. The plants look stunning planted in beds, boarder, containers, greenhouses, glasshouses and in your home for a beautiful appearance. Ball shaped headed plant is made up from multiple individual blooms that turn pink, lilac, rose and white as they begin to mature overtime.

    • Colour mixed
    • Scented
    • Height 41-50cm
    • spread 21-30cm
    • Plant in beds & boarders, containers, greenhouses, glasshouses or in your home
    • Prefers to be placed in full sunlight
    • Attracts butterflies
    • Sowing time February-March/ May-June
    • Flower/fruit from July/September

    This product is available at the following Garden centres:
    • Alexandra Palace Garden centre
    • Neals Nursery Garden centre
    • Woods of Berkhamstead Garden centre

  • Wild Flower Mediterranean Mix Thompson & Morgan

    Experience long. hot summer days whatever the weather with this vivid mix of Mediterranean-style plants, guaranteed to give you that holiday feeling. Hassle-free and easy to grow, sow direct outdoors in the garden. An exciting mix. Perfect bed and border filler; sow seed in drifts.

    Subject to availability, packet contains mix of the following; Antirrhinum, Asperula,Bupleurum, Calendula, Centaurea, Chrysanthemum, Cladanthus, Convolvulus, Delphinium, Echium, Fedia, Iberis, Lavatera, Legousia. Linaria, Linum, Lobularia, Lonas, Maiva, Nigeila, Papaver, Reseda, Roemeria, Siiene, Viscaria.

  • Poppy Candy Floss Thompson & Morgan

    A truly fabulous New & Exclusive introduction from Thompson & Morgan. Huge 7-10cm (3-4in) diameter, fully-double pom-pom flower heads stand tall and proud above glaucous foliage. The stunning flowers are followed by large, attractive seed heads which look wonderful in dried flower arrangements.

    Sow in large drifts in borders as an easy-to-grow annual which will attract admiration from passers-by and neighbours!


    Culinary note: Only the seeds of Papaver somniferum are edible. For more details about edible flowers click here.

  • Wild Flower Butterfly Bush Thompson & Morgan

    A strong growing easy to raise shrub producing fragrant plumes during the summer which are much loved by butterflies. Saved from named varieties. Flowers summer.

    Height & Spread: 8x 6ft (240x180cm).

  • Cornflower Classic Fantastic Thompson & Morgan

    The Cornflower ‘Classic Fantastic’ also known as ‘Blue-Bottle’ or ‘Bachelors Buttons’ features a beautiful mixture of single and semi-double blooms in shades of cool blue that range from fresh light blue to dark, and blue and white bicolour.
    Easy to grow with a long lasting flower display, they are perfect for a summer bed or border. You can enjoy them in your home too, as a cut-flower, or even add the petals to salads as a colourful garnish- you can also add them to omelettes and pasta dishes! And this hardy annual will attract vital pollinating insects into your garden.
    Sow your cornflower seeds outdoors where you wish for them to grow from March to April.
    Choose a position in full sun with well-drained soil which has been raked to a fine tilth. Then sow your seeds thinly at a depth of 3mm in drills of up to 30cm apart. Water regularly especially during dry periods. Germination should take up to 21 days. Once the Cornflowers are large enough to handle, thin them out to 15cm apart.
    Alternatively you can grow your Cornflowers indoors from August to September for an early summer flowering the next year. Sow on the surface of good quality compost at a temperature of up to 23C and cover finely with compost or vermiculite. Do not exclude light as this helps with the germination process. When large enough to handle, transplant into cooler conditions until they are large enough to plant outdoors.
    Overwinter Cornflower plants in a cool, light and frost-free location before planting the following spring, alternatively grow in a greenhouse and a pot plant.

  • Phlox Drummondii Moody Blues Thompson & Morgan

    An easy to grow half hardy annual and cottage garden classic, freely flowering in a broad range of attractive blue shades throughout the summer. Its compact bushy habit makes it ideal for planting as drifts of colour, as border edging or in containers.

  • Poppy Pink Fizz Thompson & Morgan

    Bring your garden to life as the stems of silver foliage sway in the breeze, topped by elegant two-tone pink bicolour blooms with irregular and finely slashed ëlacinateí petals. An easy to grow annual that is sure to create interest in your borders.

  • Wild Flower Sweet Rocket Thompson & Morgan

    Charming, large spikes of single, lilac and purple flowers are produced in the spring filling the air with their sweet and spicy evening fragrance. Sweet Rocket will also attract butterflies and other beneficial insects to your garden. Hardy Biennial – can be perennial in some soils.

  • Wild Flower Teasel Thompson & Morgan

    Tall, striking, thistle-like plants with serrated leaves and large spiny flower heads. A valuable source of nectar for bees and butterflies, as well as attracting many seed-eating birds to your garden or wild flower meadow. Makes attractive, dried, cut flowers.

  • Wild Flower Foxglove Thompson & Morgan

    A familiar sight in early summer growing wild in shady places in Britain Its tall spires of drooping rose purple flowers will grace any garden in sun of part shade. Very easy.

  • Wallflower Tom Thumb Thompson & Morgan

    Very wide colour range, excellent in small spaces, tubs, window boxes. Slightly later flowering.