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DAHLIA 'Knockout'
Dwarf form. Large bright yellow ribbed, sunflower-like blooms with prominent orange centres. Black lacquered foliage
Further Reading....
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OrangeOrange centres -
Yellow -
HeightTo 1m (39in) -
Spread60cm (24in)
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TuberousUpright, bushy, clump-forming tuberous perennial. Flowers 10cm (4in) across
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Half hardy - unheated greenhouse / mild winterHardy 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
DAHLIA 'Knockout'
- Details
- Description
- Tips and Advice
- Goes Well With
- Planting Combinations
- Other Suggestions
- See Also...
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Additional Features
Good to knowWildlife plant - nectar and pollen for insects. Very suitable for containers. Mystic series (Mystic Illusion)
Pests & DiseasesSlugs, earwigs, caterpillars, mosaic rust, powdery mildew
Place of originGarden origin. New Zealand. Dr. Keith Hammett -
Flower ShapeSingleRow of petals round conspicuous stamens - no more than 8 petals
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Garden Location/ConditionsPatio / pot plantsSuitable for small gardens
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HardinessFrost hardy (down to -5)
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Seasonal InterestAutumnSummer
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Soil ConditionsFertile moist well-drained soilHumus-rich
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Wildlife
Bee friendlyRabbit Resistant
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Useful extras...
Fertilisers & Feeds - Vitax
Q4 Pelleted Fertiliser
A useful fertiliser suitable for use on a wide variety of plants. Q4 provides all the nutrients and trace elements essential for vigorous growth, abundant flowering and ripening of fruit.
3 options from £6.00
Fertilisers & Feeds - Empathy
Rootgrow mycorrhizal fungi
Recommended by the RHS. Contains Rootgrow™ mycorrhizal fungi. Suitable for all trees and shrubs (except rhododendrons, azaleas, heathers, cranberries and blueberries)
2 options from £6.00
Fertilisers & Feeds - Empathy
All-purpose Seaweed Stimulant
All-purpose organic concentrated seaweed feed that is a ready to use, derived from sustainable harvested kelp, that can be used on all outdoor and indoor plants, except acid loving plants.
Perfect used in conjunction with Rootgrow™.
Only £7.50
Vermin & Pest Control
Slug Pellets
Slug killer blue mini pellets are easy to use and give effective control of slugs and snails.
Ideal in garden, conservatory or greenhouse.
Only £6.50
Vermin & Pest Control
Copper Tape
Quick and easy way to repel slugs and snails from your pots with this adhesive copper tape.
Only £7.50
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