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Dahlia ‘Icoon’


Great for wildlife
Attracts Wildlife
90cm x 60cm
Tender Perennial
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Dahlia ‘Icoon’ stands out in our nursery for its bold and striking presence. With its large, vibrant blooms and sturdy stems, it adds a touch of drama to any garden. This dahlia variety thrives when planted in sunny borders or as a focal point in mixed beds, where its vivid colors can be showcased. Its impressive stature and eye-catching appearance make it a must-have for gardeners looking to make a statement in their outdoor spaces.

Additional information

Plant Type
Flowering Period
Flower Colour
Fully Grown Size
Garden Position
Light Level
RHS Plants For Pollinators
RHS Garden Merit Award
Pot Size
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Dahlia 'Icoon' is a stunning Dahlia variety known for its large, eye-catching blooms and its vibrant colour palette. The flowers feature a radiant mix of deep red and bright yellow, creating a striking bicolour effect that stands out in any garden design. Each bloom can reach up to 15 cm in diameter, making them perfect for creating a bold display in your garden beds or borders. Flowering from July to October, Dahlia 'Icoon' grows to a height of around 90 cm, providing excellent vertical interest and structure towards the back of your beds. Its strong stems make it excellent for cut flower arrangements, bringing vibrant colour and a touch of texture to your indoor spaces. Our horticultural team have selected this variety for its truly reliable performance and exceptional beauty, ensuring it thrives in a range of garden settings. Dahlia 'Icoon' is well-suited to cottage gardens, contemporary landscapes, and mixed perennial beds. We recommend pairing it with complimentary plants like Rudbeckia, Echinacea, and ornamental grasses for a stunning, dynamic display. This Dahlia also attracts pollinators in decline, earning the RHS Plants for Pollinators award, which highlights its ecological benefits.

Planting Conditions

To plant your Dahlia, we recommend choosing a sunny spot in the garden that receives at least 6 hours of direct sunlight daily. The soil should be well-drained and enriched with compost or organic matter. Plant the Dahlia with spacing of 30-60 cm apart to allow for growth and air circulation. We advise the planting location is sheltered from strong winds to prevent damage. Water the Dahlia regularly to support its establishment, keeping the soil moist but not waterlogged, to promote healthy growth and vibrant blooms.

Watering & Feeding

To water and feed your Dahlia, we recommend adding granular feed to the compost before planting. Once planted, water regularly to help establish the plant. Make sure to direct your watering can or hose to the base of the plant, ensuring the water soaks down to the roots. This deep watering helps promote strong root growth. Dahlias thrive with consistent moisture, so keep the soil evenly moist but not waterlogged. During the growing season, consider using a balanced liquid fertiliser every 2-4 weeks to encourage robust blooms.

General Care

If your Dahlia has large flowers you may need to put stakes in the ground, one per stem and tie the stems to the posts to support the weight of the flower. As the flowers fade, cut back the stems to a leaf joint, as this will encourage the plant to keep producing new buds. At the end of the season you can leave the Dahlia tuber in the ground if they are planted in a very free draining position and you live in a warmer part of the UK. You will need to cover it with at least 6 inches of mulch, for example bark chippings. You can also dig the tuber up, shake off the excess soil and place it in a dark, dry and cool place for the Winter. Surround it with dry material like sand and replant it in the ground once there is no risk of frost in the next Spring. Dahlias can be prone to aphids, slugs, and fungal diseases; regular monitoring and care are advised.