If your flowerbeds are looking a little bare, perhaps it’s time to add some colourful flowers and plants to your garden. At Capital Gardens, we stock a comprehensive range of premium seeds for all of your green-fingered needs – including flowers, plants, vegetables, herbs and fruit.

Seeds are available to buy in small batches, and come complete with full planting instructions as well as a guide on the best conditions for growth. Whether you want to add vibrancy to your garden with flowers or start growing your own vegetables, our affordable seeds can help you create a brighter, happier garden.

Plants and Flower

At Capital Gardens, we work with Suttons and Thompson & Morgan to bring you the very finest selection of flower and plant seeds for your garden. Whether you’re looking for hardy annuals, perennials or evergreens, we supply a great range of specially selected seeds that are available to buy online at affordable prices.

Add colour, texture and brightness to your garden with our fantastic range of seeds. Available in a diverse range of colours and variations, our seeds are easy to plant and garner excellent results when planted in the correct conditions. Many of the seed packs we offer feature a mixture of colours, so you can enjoy a greater range of colours in your garden.

Fruits and Vegetables

Or perhaps you’re interested in growing your fruits and vegetables? If so, we have a number of premium fruit and vegetable seeds that are easy to grow in a small allotment or vegetable patch. From leek and cabbage to carrots, tomatoes, courgettes, beans and chilli peppers – we have a wide range of vegetable seeds available to buy online. We also offer a range of exotic fruit seeds, including melon, pomegranate and a chinese yellow banana.

For additional information on buying and sowing seeds, contact the Capital Gardens team today on 01442 875 037.



    Soak the peat disks that are provided in water & watch them expand to roughly seven times their actual size. Begin to crumble it into the peat starter growing pots and add the seeds.

    • 1 x packet of Lettuce Valmaine seeds
    • 1 x packet of Curled Cress seeds
    • 1 x packet of Sorrel Blood Veined seeds
    • 1 x packet of Coriander seeds
    • 1 x packet of Salad Rocket seeds
    • 1 x pair of Garden Snips
    • 5 x Starter Growing Peat Pots
    • 5 x Plant Markers
    • 5 x Peat Growing Plugs

    This product is available at the following Garden centres:

    • Alexandra Palace Garden centre
    • Neals Nursery Garden centre
    • Woods of Berkhamsted Garden centre
    • Studley Green Garden centre


    This larger bag is by far the most popular size available. As this product can be used on practically anything you want to plant, you may well need more than one bag for the year. Especially if you are planting an entire bed or border. It is well worth investing in Rootgrow as the benefits are incredible and really help establish new plants.

    Rootgrow  contains mycorrhizal fungi which naturally increase nutrient and water uptake by forming a highly efficient secondary root system.

    • Size 10G

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