Seeds & Bulbs

Seeds & Bulbs

Seeds and Bulbs

With more 700 products available, the comprehensive seeds and bulbs collection from Capital Gardens makes it easier than ever to grow a full selection of plants, fruits and vegetables. From beautiful, exotic flowers to delicious root vegetables, the Capital Gardens range can help you fill your flowerbed and plate alike.

All of our seeds and bulbs are sourced from expert growers and gardens, ensuring you receive the highest quality plants, flowers, fruit and vegetables.

Home Grown Veg 

With a range of time-tested favourites such as King Edward Potatoes alongside more unusual additions including Dwarf French Beans; the Capital Gardens range can help you create a stunning and fruitful vegetable patch. Live the good life with a constant supply of beautiful and organic home grow veg, saving you money and increasing your veggie intake.

With clear instructions, our vegetable seeds and bulbs range is perfect for getting kids interested in growing and cultivating their own food – at home or at school.

Beautiful Flowers

The Capital Gardens range of bulbs and seeds can help you grow stunning and intoxicating flowers in your home or back garden. From classics such as pink orchids, to stunning scented sweet rainbows, the Capital Gardens range offers a wide range of aesthetic styles.

We are constantly updating and overhauling our range of seeds and bulbs – in-keeping with the latest trends and seasonal changes.

Help Growing 

If you are new to growing from seeds and bulbs, the experienced Capital Gardens team are available to help with any questions or concerns you have. From choosing the right seeds and bulbs for the season to helping them grow healthy and strong; phone our team on 01442 875 037 for quick and simple assistance.


    First Early – 2kg

    The ‘Accord’ potato is a first early variety that produces high yields of uniform, oval tubers which look and taste sublime.

    Their creamy white skin and soft flesh is extremely versatile and you can use them for almost any culinary purpose. They are easy to grow and perfect for growing in containers.

    With a good disease resistance to common and powdery scab, it also is resistant to double eelworm.

    The waxy texture of the potatoes means that they are firmer and hold their shape which makes them useful when boiled, steamed, chipped or roasted.

    Plant from mid February to April and the crop will be ready to harvest from June until July.

  • Achillea Seeds Summer Berries Improved Suttons

    The Achillea ‘Summer Berries’ produces masses of tiny flowers that create flat plates of colour, balancing on tall stems amongst aromatic and feathery foliage. Low maintenance, this perennial is an explosion of late summer colour which will brighten up the back of any herbaceous border! They are easy to grow, and will thrive on even poor soil. Bred for their compact and hardy growing habit, they can also be used to encourage vital pollinating insects into your garden, like bees and butterflies. The vibrancy of colour also makes them spectacular cut flowers to enjoy indoors too.

    Sow your seeds from February to June, or September to October. Sow on the surface of good quality seed compost, and then cover with a sprinkling of compost or vermiculite. Place inside a polythene bag until after germination which will take up to three weeks. Light helps with germination so do not exclude any.

    When your seedlings are large enough to handle transplant them into 7.5cm pots and continue to grow in cooler conditions. When your plants are well grown, and there is no more risk of frost, gradually start to acclimatise them to outdoor conditions for up to 15 days before planting out. Plant at a distance of 60cm apart in full sun and well drained soil. Overwinter September sowings in a cold frame and plant them out before spring.

    Height: 60cm

    Spread: 60cm

  • Achillea Summer Berries Thompson & Morgan


    The Achillea ‘Summer Berries’ produces a mass of tiny flat flowers, that are held on tall stems above fragrant, feathery foliage. They are a low maintenance perennial that will provide an explosive display of late summer colour to brighten a herbaceous border.

    Easy to grow, they will even thrive in poor dry soils which makes them ideal within wildlife gardens where they will attract vital pollinating insects and butterflies. With a wide range of colours that will not only enliven your garden but that will also make a spectacular cut or dried flower.

    Sow in February to June, giving your seeds time to germinate before planting outdoors.

    Alternatively you can sow in September to October for a later bloom.

    Height: 60-75cm (24-30in).


    Agapanthus ‘African Surf’ – 3 per pack
    Agapanthus ‘African Surf’ is characterised by its large umbrella of mauve and pure white flowers amongst spears of foliage. With a blooming period between July and September, this hardy plant prefers fertile, well-drained soil- if using heavy soil mix combine with in some grit. Bold and architectural these strikingly attractive plants are a firm favourite, fitting perfectly into any modern- or classic- garden. They also make a perfect spectacle for any pot and are wonderful cut-flowers (lasting up to two weeks!).
    Agapanthus are drought tolerant, and are able to cope with wind.
    Planting tips:
    • Plant in well- drained, fertile soil in full sunlight
    • It may take a while for the plant to establish (up to 3 years) before the flowering really comes into its own- but it’s definitely worth the wait!
    • Cover the crown of the plant in mulch to protect it from the cold in the autumn and winter months.
    • You can separate any clumps that become too big every four or five years.
    • If you have planted your agapanthus in a pot, move indoors or two a sheltered area in the winter so that the roots don’t freeze.
    • When planting in a pot make sure you split and replant occasionally as the roots become congested and flowering could suffer.


    Agapanthus Umbellatus

    Agapanthus, sometimes referred to as the ‘Nile lily’ are a herbaceous perennial originating from South Africa. They produce deep green strap like foliage above which, appears gorgeous umbels of beautiful miniature trumpet shaped pale blue flowers. These flower heads can get to around 30cm in diameter! Agapanthus are hardy in most parts of the UK. They will die down in the winter periods only to re-grow when it gets a bit warmer. If you happen to live in a very cold area of the UK, mulch these plants if they are in the ground or move the pot they are in to a sheltered location. This will prevent them from getting to wet or cold.

    Agapanthus look fantastic in pots. The root restriction allegedly encourages more flowers. The biggest benefit to having these plants in pots is that they can be moved to a sheltered position throughout the colder months. It also allows you to move them to a more prominent position whilst looking their best.

    This product is available at the following Garden Centres:

    • Alexandra Palace Garden Centre
    • Neals Nursery Garden Centre
    • Woods of Berkhamstead Garden Centre

    Agapanthus Umbellatus ‘Alba’

    The Agapanthus Umbellatus ‘Alba’ also referred to as the ‘Lily of the Nile’ is a herbaceous perennial with beautiful architectural flowers and evergreen foliage. They produce deep green strap like foliage above which stands gorgeous umbrellas of wonderful miniature trumpet shaped white flowers.

    The ‘Alba’ has an eventual flowering height of around 45cm, making them beautifully eye-catching. Agapanthuses are hardy in most parts of the UK. They will die down in the winter periods only to re-grow when it gets a bit warmer. If you are growing your Agapanthus in a pot make sure they are positioned in to a sheltered location so as not to get too wet and cold.

    When planting choose a location with full sun and moist but well drained soil. They flower best if the roots are restricted- such as in a pot.

    Perfect as display plant, but also within a border of mixed architectural plants.

    Water frequently to help establish.

    This product is available at the following Garden Centres:

    • Alexandra Palace Garden Centre
    • Neals Nursery Garden Centre
    • Woods of Berkhamstead Garden Centre
  • Agastache Astello Indigo Thompson & Morgan

    The Agastache ‘Astello Indigo’ has received the Fleuroselect Gold Medal for its vigorous growth and compact habit. They bloom with extraordinary upright spikes that are covered in lost-lasting deep indigo flowers.

    Quick growing, they will flower within the first year of sowing. They will grow to a height of up to 60cm tall and spread up to 30cm wide. Statuesque and sturdy, the will not need staking and are perfect within a border or containers.

    The mint-scented flowers are irresistible to butterflies and bees and the mid-green edible foliage is highly fragrant.

    Easy to grow and care for, they will thrive in dry soils and sunny positions. Sow your seeds in early February to March under glass and they will flower in later summer. Alternatively sow in April to June and they will flower in early summer the following year.


  • Agastache Fragrant Mixed Thompson & Morgan

    A truly amazing display of tall, brightly coloured spikes of tasselled florets appear to burst out like flames from the lanced and highly perfumed foliage. Very quick and easy to grow, this lovely perennial will enhance your borders and containers, whilst its balmy fragrance will attract insects away from your summer patio! Excellent first year flowering variety.

    Height: 50-60cm (20-24in).

  • Ageratum Blue Mink Thompson & Morgan

    The Ageratum ‘Blue Mink’ produces a wealth of fluffy, powder-blue flowers. A pop of colour which contrasts perfectly against its compact, and uniform foliage.

    One of the most popular of the flossflower variety, ideal for patios, beds and borders, they are also the perfect plant to encourage bees and butterflies into your garden. Give a bit of texture as well as colour to your garden this year!

    Vigorous and hardy, the Ageratum ‘Blue Mink’ should be sown from February until mid spring (April) in good seed compost.

    Sow seed on the surface of your compost and gently firm down. The germination period will take up to 15 days. Be sure to keep the soil damp, but not wet and do not exclude any light.

    Once the seedlings are large enough to be handled, transplant and grow them in cooler conditions- until they are large enough to plant outdoors.

    Acclimatise your Ageratum to outdoor conditions for roughly 10 days- only once the risk of frost has passed.

    Position in full sunlight, in fertile and well drained soil, with a distance of up to 30cm apart.

    Height: 30cm

  • Ageratum Seeds Blue Mink Suttons

    The Ageratum ‘Blue Mink’ is an old variety of flossflower that remains popular today, and for good reason. Compact and uniform, the plant bears large and fluffy, powder blue flowers with a vigorous and open habit. Perfect for adding texture and colour to beds, borders or containers. They are also wonderful for attracting pollinating insects into your garden.

    Sow from later winter to mid spring at a temperature of 15-18C in good quality seed compost.  Sow on the surface of your compost and firm down gently. Keep your soil moist but not wet and do not exclude any light. Germination will take from 10-15 days.

    When your seedlings are large enough to handle, acclimatise them to the cooler outdoor conditions for up to 10 days before planting out. Transplant outdoors in a sheltered and sunny position with moist and well drained soil at a distance of 15-30cm apart.

    Height: 30cm

    Spread: 30cm

  • Ageratum Seeds Timeless Mix Suttons

    The Ageratum is a classic mix of flossflowers in shades from pink and lavender through to deep purple, white and blue. They are weather resistance, with powder puff blooms that are supported on tall and long stems. Perfect for filling in gaps in you borders, adding height and texture to informal planting schemes. A wonderful addition to wildlife borders, they are particularly eye catching.

    Sow from late winter to mid spring at 15-18C in good seed compost. Sow on the surface of good quality compost and gently firm down. Keep your soil damp but not wet and do not exclude any light as this will help with germination. Germination takes up to 15 days. When your seedlings are large enough to handle, transplant them and grow on in cooler conditions until they are large enough to grow outdoors. When your plants are more established, and there is no risk of frost, acclimatise your plants to outdoor conditions for up to 10 days. Plant out in a sheltered and sunny position with fertile and well drained soil at a distance of up to 30cm apart.

    Height: 50cm

    Spread: 30cm

  • Agrostemma Ocean Pearl Thompson & Morgan

    The Agrostemma Githago, also referred to as ‘Ocean Pearl’ and ‘Corn Cockle’ were originally bred by Thompson & Morgan. The tall and statuesque ‘Ocean Pearl’ bears unusual, large blooms in pure white with distinctive speckled markings at the base of each petal. They are an easy to grow annual that thrives on poor soils. The beautifully delicate and attractive flowers will also attract bees and butterflies into your garden, and if you plant more than you need you can have them as wonderful cut-flowers too. Sow from March until May, and you will be able to appreciate their beautiful display from June until August and will grow to an eventual height of up to 60cm and spread of up to 30cm.

    Sow directly outdoors in a position with full sun and well drained soil which has been raked to a fine tilth. Sow the seeds thinly at a depth of up to 12mm in drills spaced 30cm apart. Then cover the seed to exclude light. Water regularly.

    The germination period should take between 7 to 14 days, and once the seedlings are large enough to handle, thin them out to 30cm apart.