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Dahlia Spartacus Senior | Dinnerplate Dahlia
Dahlia Spartacus Senior | Dinnerplate Dahlia

Dahlia Spartacus Senior | Dinnerplate Dahlia

SKU: BU30002844
1 × tuber
£5.99
In stock (despatch in 1-2 working days)
3 × tubers
£15.00 £5.00 each
In stock (despatch in 1-2 working days)
3 litre pot
£17.99
Available to order from spring
1

Pot size guide

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Bulbs (only) £4.99

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Overview

Large yellow-green buds top tall stems, and open to form giant-sized (up to 20cm across) flowers with broad, reflexed petals. Initially, their colouring is deep maroon, but as they mature, they fade to rich velvety red. Often the judges' favourite at the shows, it looks very dramatic in the border or the vase.

Specifications

  • Position: full sun
  • Soil: fertile, humus-rich soil
  • Rate of growth: average
  • Flowering period: July to September
  • Hardiness: half hardy (may need winter protection)
  • Toxicity: Ornamental bulbs should not be eaten by humans or pets

Eventual height & spread

Eventual height and spread

Care guide

Dahlia tubers can be planted outside after frost, or started off in pots under glass in late winter to early spring. Plant them horizontally approximately 12cm deep, making sure the 'eyes' are uppermost. Allow enough room between each tuber so the plants can grow and spread to their full size without being overcrowded. While in growth, provide a high-nitrogen liquid feed each week in June, then a high-potash fertiliser each week from July to September. Stake with canes or brushwood if it becomes necessary. In mild areas, leave them in situ over winter, but protect the crown with a generous layer of dry mulch. In colder areas, carefully lift and clean the tubers once the first frosts have blackened the foliage and allow them to dry naturally indoors. Then place the dry tubers in a shallow tray, just covered with slightly moist potting compost, sand or vermiculite and store in a frost-free place until planting out again.

Warning

Humans/Pets: Ornamental bulbs - not to be eaten

How your order will arrive

Packaging
Bulbs arrive in bags placed in small cardboard boxes. Material may vary.

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About Primrose

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© 2026 Cercis Ltd. All rights reserved | Primrose is the trading name of Cercis Ltd (Registration number: 14521244)

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© 2026 Cercis Ltd. All rights reserved | Primrose is the trading name of Cercis Ltd (Registration number: 14521244)