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Dahlia Portofino

Dahlia Portofino

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'Portofino' is a ball dahlia whose round and alveolate flowers of 10-11 cm display a warm orange colour with hints of apricot. The young plant, which forms a clump of 1.10 m in height on average, blooms from summer to frost. An excellent cut flower, this variety adds warmth to flower beds.
Flower size
11 cm
Height at maturity
1.10 m
Spread at maturity
60 cm
Exposure
Sun
Hardiness
Hardy down to -4°C
Soil moisture
Moist soil
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Best planting time April to May
Recommended planting time March to June
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Flowering time July to October
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Description

The Dahlia 'Portofino' is a cultivar of Dahlia "ball" that charms with its warm and deep orange color, without aggressiveness, touched with apricot at full bloom. Shaped like flattened pompoms of medium size, the alveolate flowers play with light and color perception. It is a variety of medium height that blooms from summer to frost. Its warm and soft flowers are enhanced by the flowering of asters or grasses.

The Dahlias, from the Asteraceae family, originate from botanical species native to the high plateaus of Mexico. Their inflorescences are heads, but we commonly call them "flowers". Thousands of horticultural varieties have been created by humans, with new ones added each year, much to the delight of gardeners and florists.
The 'Portofino' variety forms a clump measuring on average 1.10 m in height after 3 to 4 months of cultivation with a span of 60 cm. It is classified among the Dahlias of the decorative group with Ball type flowers. In this category, the heads have no visible center, composed of numerous regularly arranged petals (ligules) completely rolled up on themselves, tubular and never flaring out. Varieties that form true balls, such as pompons (diameter less than 6 cm) and balls (diameter greater than 6 cm), are found here. The 'Portofino' cultivar heads generally measure 10-11 cm in diameter. The plant has an upright and bushy habit. The flowering period spans from July to October, if faded flowers are removed or cut for bouquets. The very branched, long, and sturdy stems are hollow and may require staking in windy conditions. The leaves are opposite, pinnatisect, meaning they divide into 3 or 5 very dentate lobes. Here, the leaves are a medium green and the stems are tinged with purple.

The Dahlia 'Portofino' forms beautiful combinations with Verbena bonariensis, its airy purple flowers provide a strong contrast with the dark orange of 'Portofino', and their lightness balances the denser floral heads of the dahlia. The Ammi majus 'Queen of Africa', with delicate white umbels, softens the orange while giving a "chic country" style to your composition. The Achillea millefolium 'Terracotta' in terracotta and soft orange tones creates a perfect harmony with the dahlia. Also consider sowing in your border the Cosmos 'Apricot Lemonade', its flowering in a subtle blend of pale yellow and apricot perfectly matches the tones of the dahlia, while lightening it.

A star plant for borders and cottage gardens, Dahlias confidently accompany the most beautiful flowers but are also appreciated alongside vegetable plants. In Mexico, this tuberous plant was initially cultivated as a root vegetable for consumption. However, its poor taste qualities relegated it to the status of an ornamental plant. The Dahlia, with its infinitely varied shapes and colors, is now considered one of the most beautiful flowers in the garden.

Dahlia Portofino in pictures

Dahlia Portofino (Flowering) Flowering

Plant habit

Height at maturity 1.10 m
Spread at maturity 60 cm
Growth rate fast

Flowering

Flower colour orange
Flowering time July to October
Inflorescence Flower head
Flower size 11 cm
Good for cut flowers Cut flower blooms

Foliage

Foliage persistence Deciduous
Foliage colour medium green

Botanical data

Genus

Dahlia

Cultivar

Portofino

Family

Asteraceae

Origin

Cultivar or hybrid

Product reference23345

Planting and care

The Dahlia Portofino is easy to grow in all regions. For a generous flowering, it is good to follow a few simple rules, plant the tubers in full sun as soon as the last frosts are over, rich, fresh and well-drained soils are perfect. However, stagnant moisture would promote tuber rot. Feel free to amend the soil with compost and sand if needed. Work the soil deeply and enrich it with crushed horn or dehydrated blood for example. Place your tuber and crumble the soil well to refill without air pockets. Your dahlia should be covered with about 6 cm of soil. At the end of planting, water once abundantly and then renew this watering regularly during the first 6 weeks to help with rooting.

Dahlias are sensitive to cold, they need to be overwintered. In November, the first frosts blacken the foliage, it's time to dig them up. Carefully unearth the tubers. Remove as much soil as possible. Let the foliage dry so the tubers can replenish their reserves. Then cut the stems to 10 cm. Spread your bulbs in a crate on newspaper. Store them away from frost in a dry, cool and dark place, such as a frost-free garage or attic, for example. In southern regions, close to the coast, experiencing few days of frost per year, it is possible to leave them in place. In this case, simply cover the ground with a layer of leaves or straw for protection.

Planting period

Best planting time April to May
Recommended planting time March to June
Planting depth 10 cm

Intended location

Suitable for Meadow
Type of use Border, Vegetable garden
Hardiness Hardy down to -4°C (USDA zone 9b) Show map
Ease of cultivation Amateur
Planting density 6 per m2
Exposure Sun
Soil pH Any
Soil moisture Moist soil, fertile, deep and well-drained

Care

Pruning instructions Regularly remove faded flowers.
Pruning Pruning recommended once a year
Pruning time July to September
Soil moisture Moist soil
Disease resistance Good
Overwinter Needs to be stored

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