Overview

Dahlia 'Prins Carnaval' (D) is a bushy, clump-forming, tuberous perennial bedding in the genus Dahlia, part of the Asteraceae family, with green, occasionally dark-leaved foliage. Dahlia 'Prins Carnaval' (D) grows best in full sun, and tolerates loam soils and neutral pH. Its UK hardiness is rated H4. Suggested uses include borders, containers and cut flowers.

About

Dahlia 'Prins Carnaval' is a tuberous, well-branched, clump-forming bedding dahlia that flowers from July to October. It sits in the Asteraceae family and is grown as a herbaceous perennial for borders, containers and cutting. The plant prefers full sun on neutral loam that stays moist but drains freely and benefits from a south-facing, sheltered position.

About the genus

Dahlias come from the high meadows of Mexico, and somewhere in that heritage is the explanation for how they behave here: tender to frost, hungry, generous beyond all reason. No other plant gives you quite so much for so little. One tuber, planted after the last frost, becomes a shrub's worth of flowers by August — and the more you cut, the more they come.The range is faintly ridiculous. Tight pompoms, spiky cactus types, singles the bees adore, dinner-plates the size of your face. Whatever your garden's mood, there is a dahlia that agrees with it, which is probably why every generation falls out of love with them and then, a decade later, falls straight back in.They're at their best when much of the garden is winding down — late summer into autumn, flowering hard until the first frost calls time. I think of them as the encore. And they always play it.

Written by Henry

In the garden

Dahlia 'Prins Carnaval' is a cultivar within the genus Dahlia (family Asteraceae), developed for garden displays as a bedding, herbaceous perennial with tuberous roots. Its habit is clump-forming with multiple stems, making it suitable where repeated seasonal flowering is wanted; the flowering season runs from July to October. Use it where you need extended summer and autumn interest. For best results plant in full sun on a neutral loam that retains moisture yet drains well; a south-facing, sheltered aspect reduces wind damage to stems. The soil should not stay waterlogged; consistent moisture through the flowering months supports steady bloom production. Its UK hardiness is H4 (average), so plan planting with that level of winter resilience in mind and site plants where they avoid the coldest exposures. Dahlia 'Prins Carnaval' works well in mixed borders, grouped in container plantings or grown specifically for cutting. Position containers near the house for easy harvesting or place several in a border to extend the visual run from midsummer into autumn. Regular removal of spent flowers helps maintain a tidy display and supports continued flowering through the July–October season.

Growing conditions

Best soil and position for Dahlia

Sunlight
Full sun
Soil type
Loam
Soil pH
Neutral
Soil moisture
Moist but well-drained
Aspect
South-facing
Exposure
Sheltered
UK hardiness
H4

Plant details

Dahlia 'Prins Carnaval' (D) size, habit and characteristics

Plant type
Bedding, Herbaceous Perennial
Habit
Bushy, clump-forming, tuberous perennial
Foliage
Green, occasionally dark-leaved
Suggested uses
Borders, containers, cut flowers

Care notes

Pruning and caring for Dahlia 'Prins Carnaval' (D)

Propagation
Division, cuttings, seed
Pest resistance
Generally pest-resistant
Disease resistance
Generally disease-resistant

Frequently asked questions

Where is the best place to plant Dahlia 'Prins Carnaval' (D)?

Dahlia 'Prins Carnaval' (D) prefers full sun. It suits sheltered positions.

What soil does Dahlia 'Prins Carnaval' (D) need?

Dahlia 'Prins Carnaval' (D) grows best in loam soil. It prefers neutral soil. Aim for soil that stays moist but well-drained.

Is Dahlia 'Prins Carnaval' (D) hardy in the UK?

Dahlia 'Prins Carnaval' (D) has an RHS hardiness rating of H4, meaning it is hardy through an average UK winter, tolerating -10 to -5°C.

How do I propagate Dahlia 'Prins Carnaval' (D)?

Division, cuttings, seed.

More in the Dahlia genus

Browse all Dahlia