Plant your dahlia tubers in spring and grow on in frost-free conditions or plant straight outside after risk of frost has passed
Grow in borders or containers in full sun
Plant the tubers 15-20cm deep
Space the tubers about 30-50cm apart
Plant with the new shoots or ‘eyes’ facing upwards
Water-in after planting and keep hydrated while in growth
Deadhead your dahlia regularly with secateurs to encourage more blooms throughout the season.
If you’re planting a tall variety with big blooms, it’s a good idea to secure a stake next to it while it’s still small – the leaves will then cover and hide the stake.
Dahlias can grow very well in patio containers. Tall varieties require a sturdy pot which is around 40-50cm in diameter.
Compact dahlias will be happy in pots which are around 30cm in diameter. Multipurpose compost is ideal for planting dahlias in pots.
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