Dahlia pinnata
Dahlias are the queens of the summer garden. From compact pompom varieties to enormous dinner-plate blooms, they produce an extraordinary range of flower forms and colours. They bloom prolifically from midsummer right through to the first frosts, making them one of the longest-flowering plants you can grow.
Full sun
Every 2–3 days
Medium
15–25°C
Medium (60–120 cm)
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Care Guide
Planting
Plant tubers 10–15 cm deep after the last frost in a sunny spot.
Watering
Water deeply every 2–3 days. Do not water until shoots emerge.
Deadheading
Remove spent blooms regularly to keep the plant flowering all season.
Winter storage
Lift tubers after the first frost and store in dry compost over winter.
Powdery mildew
Improve air circulation and avoid overhead watering. Treat with fungicide if severe.
Earwig damage
Set earwig traps (upturned pots filled with straw) near plants.
Slugs
Protect young shoots with copper tape or organic pellets.
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