Dahlia Renato Tosio
Dahlia Renato Tosio
Dahlia Renato Tosio
Dahlia
This year, I eagerly snapped up Renato Tozio, which hadn't been available for a long time. Unfortunately, it's not the right one. Instead of the beautiful orange decorative variety I was expecting, I ended up with a golden-yellow cactus, most likely Sumatra, admittedly quite cute but not what I chose. It's a shame, and it's not the first time. I can understand that during winter a small dahlia tubercle might roll into the next crate or that a dahlia that fell to the soil might be put back in the wrong crate, but when you're counting on a specific variety, it's always annoying. I still have two new dahlias that haven't flowered yet; I hope they'll be the right ones.
Philippe 87, 25/08/2025
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This plant carries a 6 months recovery warranty
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We guarantee the quality of our plants for a full growing cycle, and will replace at our expense any plant that fails to recover under normal climatic and planting conditions.
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Description
Dahlia 'Renato Tosio' Decorative , with its double flowers of a light and pure orange, brings a touch of whimsy and a very trendy note to flowerbeds and homemade bouquets. Its flowers are medium-sized, but very double, and have an orange colour with golden highlights, slightly paler on the periphery, stunning when paired with white or vibrant blue. The plant, which is elegant, forms a beautiful bushy and dense clump, with long-lasting flowering and abundant medium-green foliage.
Dahlias belong to the large aster family and are originally from the high plateaus of Mexico. Currently, the approximately 25,000 horticultural varieties created by humans have arrived in gardens around the world, much to our delight. Dahlias are classified based on the shape of their flowers. 'Renato Tosio', introduced in 1997, is classified as a Decorative Dahlia. In this group, the coloured ligules of the head are arranged regularly in a spiral, they can be curved towards the stem or fringed, for example. In this variety, the heads are 16-17 cm (6-7in) in diameter and the ligules are wide, flat, and slightly folded towards the centre, with a magnificent light orange color with golden reflections, those in the centre are slightly darker, sometimes tinged with red. The flowering period is from July to October. The plant will reach a height of 1.20 m (4ft), and a width of 50 to 70 cm (20 to 28in), with a bushy and erect habit. The highly branched stems are hollow and the leaves are opposite and pinnately compound, meaning they are divided into 3 or 5 leaflets, which have very denticulate lobes. The leaves are medium green, and the stems are rather purplish.
To promote re-flowering and extend the flowering period, be sure to remove faded flowers. Even better, regularly create enticing colourful bouquets by combining various varieties. The tall stature of this variety makes it suitable for the back of perennial flowerbeds, where it pairs well with red, yellow, brown, and purple. The flowering of sunflowers, cosmos, and echinaceas is perfect alongside dahlias, as well as asters, for example. Also consider grasses (foxtail barley, pennisetum, stipa), which have a very beautiful effect in autumn.
As the star plant of ornamental gardens, dahlias are undoubtedly beautiful flowers. They are perfect in flowerbeds but can also enhance vegetable gardens. In Mexico, this tuberous plant was initially cultivated as a root vegetable for consumption. Its poor taste qualities quickly assigned it the status of an ornamental plant. Since then, the interest in their beautiful exuberance has never waned.
Dahlia Renato Tosio in pictures
Plant habit
Flowering
Foliage
Botanical data
Dahlia
Renato Tosio
Asteraceae
Dahlia
Cultivar or hybrid
Planting and care
The decorative Dahlia 'Renato Tosio' is easy to grow in all regions. For abundant flowering, it is good to follow a few simple rules. Plant the tubers in full sun as soon as the last frost is over. Rich, damp, and well-drained soil is perfect. However, waterlogging would promote tuber rot. Feel free to amend the soil with compost and sand if necessary. Work the soil deeply and enrich it, for example, with bonemeal. Place your tuber and crumble the soil well to fill without air pockets. Your dahlia should be covered with about 6 cm (2in) of soil. At the end of planting, water generously once and then regularly repeat this watering during the first 6 weeks to help with rooting.
Dahlias are sensitive to cold, so they need to be overwintered. In November, the first frost blackens the foliage, which is the time to dig them up. Carefully remove the tubers, removing as much soil as possible. Let the foliage dry so that the tubers can replenish their reserves. Then cut the stems to 10 cm (4in). Spread your bulbs in a box on newspaper. Store them in a frost-free, dry, cool, and dark place, such as a frost-free garage or attic, for example. In warmer regions, or areas close to the coast, where there are few frosty days per year, it is possible to leave them in place. In this case, simply cover the ground with a carpet of leaves or straw for protection.
This tall Dahlia, with its hollow stems, does not withstand wind or heavy rain well. To remedy this, you can stake it, but let's agree, it's not very aesthetically pleasing. However, by pinching the stems early or removing the axial flower buds, you can spread out the habit of the plant, which will offer more resistance to bad weather. At the same time, you channel the flow of sap to a single flower, which will become larger and sturdier.
Planting period
Intended location
Care
Planting & care advice
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Hardiness is the lowest winter temperature a plant can endure without suffering serious damage or even dying. However, hardiness is affected by location (a sheltered area, such as a patio), protection (winter cover) and soil type (hardiness is improved by well-drained soil).
The flowering period indicated on our website applies to countries and regions located in USDA zone 8 (France, the United Kingdom, Ireland, the Netherlands, etc.)
It will vary according to where you live:- In zones 9 to 10 (Italy, Spain, Greece, etc.), flowering will occur about 2 to 4 weeks earlier.
- In zones 6 to 7 (Germany, Poland, Slovenia, and lower mountainous regions), flowering will be delayed by 2 to 3 weeks.
- In zone 5 (Central Europe, Scandinavia), blooming will be delayed by 3 to 5 weeks.
In temperate climates, pruning of spring-flowering shrubs (forsythia, spireas, etc.) should be done just after flowering.
Pruning of summer-flowering shrubs (Indian Lilac, Perovskia, etc.) can be done in winter or spring.
In cold regions as well as with frost-sensitive plants, avoid pruning too early when severe frosts may still occur.
The planting period indicated on our website applies to countries and regions located in USDA zone 8 (France, United Kingdom, Ireland, Netherlands).
It will vary according to where you live:
- In Mediterranean zones (Marseille, Madrid, Milan, etc.), autumn and winter are the best planting periods.
- In continental zones (Strasbourg, Munich, Vienna, etc.), delay planting by 2 to 3 weeks in spring and bring it forward by 2 to 4 weeks in autumn.
- In mountainous regions (the Alps, Pyrenees, Carpathians, etc.), it is best to plant in late spring (May-June) or late summer (August-September).
The harvesting period indicated on our website applies to countries and regions in USDA zone 8 (France, England, Ireland, the Netherlands).
In colder areas (Scandinavia, Poland, Austria...) fruit and vegetable harvests are likely to be delayed by 3-4 weeks.
In warmer areas (Italy, Spain, Greece, etc.), harvesting will probably take place earlier, depending on weather conditions.
The sowing periods indicated on our website apply to countries and regions within USDA Zone 8 (France, UK, Ireland, Netherlands).
In colder areas (Scandinavia, Poland, Austria...), delay any outdoor sowing by 3-4 weeks, or sow under glass.
In warmer climes (Italy, Spain, Greece, etc.), bring outdoor sowing forward by a few weeks.