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Due to very high order volumes, there is an order limiting system in place at present. Please be aware that courier deliveries can be delayed, due to high volumes.

DAHLIA 'Knockout'

Dwarf form. Large bright yellow ribbed, sunflower-like blooms with prominent orange centres. Black lacquered foliage
Further Reading....

Not available until May 2021 -
individually £11.50 each, 3+ £8.00 each

Delivery Information Not available until May 2021
plant size comparison icon 1.5 to 2 Litre


  • Orange - orange centres
  • Yellow
  • Height - to 1m (39in)
  • Spread - 60cm (24in)
  • Tuberous - upright, bushy, clump-forming tuberous perennial. Flowers 10cm (4in) across
  • Half hardy - unheated greenhouse / mild winter - Hardy in coastal and relatively mild parts of the UK except in severe winters and a risk from sudden (early) frosts. May be hardy elsewhere with wall shelter or good micro-climate. Likely to be damaged or killed in cold winters. Plant can withstand temperatures down to -5°C (23°F)
  • Full sun
  • Additional Features - Good to know - - wildlife plant - nectar and pollen for insects. Very suitable for containers. Mystic series (Mystic Illusion)
  • Pests & Diseases - slugs, earwigs, caterpillars, mosaic rust, powdery mildew
  • Place of origin - garden origin. New Zealand. Dr. Keith Hammett
  • Flower Shape - Single - Row of petals round conspicuous stamens - no more than 8 petals
  • Garden Location/Conditions - Patio / pot plants -
  • Suitable for small gardens - Suitable for small gardens
  • Hardiness - Frost hardy (down to -5) -
  • Seasonal Interest - Autumn -
  • Summer
  • Soil Conditions - Fertile moist well-drained soil - - humus-rich
  • Wildlife - Bee friendly -
  • Rabbit Resistant
Dahlia - Care Guide
Tubers - Care Guide

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