Dahlia Mix 'Mammoth' - Tuber

Dahlia sp 'Mammoth'
Dahlia Mix 'Mammoth'

For a sunny summer garden

It's just unbelievable how big these impressive dahlias are!
Plant these large flowering (dinner plate sized) dahlias in a sunny, sheltered spot in the garden and they will flower through until the first frosts! The fairly tall, mixed Dahlia 'Mammoth' will look great in the back of your sunny border. Protect your dahlia tubers over the winter and you should be happy to see them appear next year again!
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Flowering Period

Planting and flowering details
  • Planting
  • Your dahlia tubers can be planted in the spring. All dahlias are sensitive to frost, so beware of late night frost. From late April to mid-May is a good time for planting dahlias. Prepare a large planting hole, thoroughly loosen the soil and fill the hole with fertile soil. Carefully place the tubers in the planting hole, approximately 50-60 cm apart and cover with 3-5 cm of soil. Press lightly down and water immediately. Dahlias bloom most profusely in a sunny spot.
    Forcing your dahlias
    It is possible to bring your dahlias into flower earlier by 'forcing' them.
    Lay the dahlia tubers in moist compost from the beginning of April, at a temperature of 15-20°  C. Pot your dahlia tubers up when you see the first shoots appear and from the start of May you can gradually acclimatise them to going outdoors. Mid-May, your dahlia tubers can finally go outdoors into the garden or in pots.
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  • Care
  • Fertilise your dahlias on a monthly basis throughout the flowering period until the first frost. Deadhead the faded flowers to prolong the flowering period. Prevent the soil from drying out during dry periods. As these dahlias are fairly tall it is sometimes necessary to support their stems.
    Overwintering dahlias
    Dahlia tubers can easily be overwintered. If you want to do this, dig up the plants after the first night frost. Then cut all stems off 15 cm above the tuber. Attach a label with the name of the dahlia to remind yourself for the next year. Shake the soil from the dahlia tubers and place in a box with peat dust or sharp sand. Store the dahlia tubers in a frost-free area such as a garden shed or greenhouse. Next spring you can plant the dahlia tubers again and they will reward you with their wonderful flowers.
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  • Specifics
  • This fairly small but very diverse genus originated in Central America. It has been crossed and re-crossed, the world over and so selected that there are currently many thousands of different cultivars available. Different in height, flower colour, flower size and flower shape. This led to dahlia cultivars being under-classified into various flower shapes too.
    Dahlias are classified under Compositae.
    Dahlias as cut flowers
    Dahlias make wonderful cut flowers and will last a long time in the vase. Cut them early morning for best results. Plunge the stems immediately into a large vase of lukewarm water with cut flower food.
    All dahlias are good for using in bouquets and arrangements - the flower heads look amazing!
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  • Extra information
  • Latin name Dahlia sp 'Mammoth'
    Delivery type Supplied as bulb or tuber
    Guarantee 100% growth and flowering guarantee
    Color Mixed Colours
    Light preference full sun ,  partial sun
    Scented not scented
    Flowers for cutting yes
    Flowering period July - October
    Growing height90 - 100 cm
    Planting distance40 - 50 cm
    Planting depth10 - 15 cm
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