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CENTAUREA
Commonly known as Knapweed
Genus of about 650 species of annuals, perennials and subshrubs widely found in dry sites, rocky mountain slopes, subalpine meadows, woodland and sand dunes mainly in Europe and the Mediterranean.
Some Knapweeds in the wild can be invasive but garden forms are ornamental and all are beneficial to insects.
In the UK the common C. nigra, Hardhead, can be dried and flower tops make a pale yellow-green dye.
The native perennial Greater knapweed, C. scabiosa can be found mainly in the south and east of England in hedgerows, on roadsides and in dry grassland.
Further Reading....
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HerbaceousEarly in the year, typically January till end of March, herbaceous plants might be supplied in 9cm pots to ensure timely despatch.Thistle-like, spherical or hemispherical flowers with tubular florets.
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Full sun
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Additional Features
Good to knowWildlife plant - bees and butterflies.
Pests & DiseasesPowdery mildew.
Place of originEurope, Mediterranean, North America, Australia. -
Soil ConditionsFertile well drained soil
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Centaurea - Growing Guide
Herbaceous Plants - Video Collection
- Dividing Herbaceous Perennials - Video Tip ondemand_video
- Spring Planting Osteospermums - Video Tip ondemand_video
- Dividing Summer Perennials - Video Tip ondemand_video
- Dividing summer flowering Hemerocallis - Video Tip ondemand_video
- Summer propagation - Video Tip ondemand_video
- Self-seeding aquilegia - Video Tip ondemand_video
- Supporting Plants - Video Tip ondemand_video
- Dead heading meconopsis - Video Tip ondemand_video
- Dead heading Delphiniums - Video Tip ondemand_video
- Feeding herbaceous peonies - Video Tip ondemand_video
- Overpotting Problems - Video Tip ondemand_video
CENTAUREA montana
Perennial cornflower, Mountain knapweed
CENTAUREA montana 'Purple Heart'
Available from £13.50
GERANIUM phaeum 'Album'
Dusky cranesbill, Mourning widow
Available from £13.50
GLADIOLUS communis
Whistling Jacks
Available from £6.50
TULBAGHIA violacea
Society garlic
Available from £13.50
Buy Varieties of CENTAUREA
CENTAUREA dealbata
Knapweed, Mealy centaury, Persian cornflower
(syn. Psephellus dealbatus) - large, fringed pinkish-purple flowers and deeply divided leaves
Gift-wrapping available
individually £13.50 each , 3+ £12.00 each
CENTAUREA 'Jordy'
Knapweed
deep reddish-purple feathery flowers and silvery leaves
CENTAUREA montana 'Alba'
Mountain knapweed, Perennial cornflower
pure white flowers growing up to 45cms(18ins)
Gift-wrapping available
CENTAUREA montana 'Purple Heart'
Mountain knapweed, Perennial cornflower
white cornflower with purple centre
Gift-wrapping available
individually £13.50 each , 3+ £12.00 each
CENTAUREA 'Silver Feather'
Knapweed
compact. Lilac-pink cornflowers above frosted silver foliage
Useful extras...
Fertilisers & Feeds - Empathy
Afterplant - Grow Your Own
AFTER PLANT GROW YOUR OWN seaweed is ready to use liquid concentrate that was specially formulated be used on all edible plants.
Only £8.00
Fertilisers & Feeds - Empathy
Afterplant - Tomatoes
AFTER PLANT TOMATO FEED Liquid Concentrate with Bio stimulant is a high potash liquid concentrate containing seaweed extract, plant derived amino acids and other nutrients specifically formulated to benefit tomatoes and greenhouse plants.
Only £8.00
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)
3 options from £3.00
Fertilisers & Feeds - Empathy
Rootgrow Ericoid mycorrhizal fungi
This specially adapted Rootgrow™ mycorrhizal fungi will boost the growth of acid-loving plants like rhododendrons, azaleas, heathers and blueberries.
It contains ericoid and arbuscular mycorrhizal fungi, which are found in poor acidic soils where ericaceous plants naturally grow.
Only £7.50
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
Fertilisers & Feeds - Vitax
Blood, Fish & Bone
Improves vegetable, fruit and flower quality. Blood, Fish and Bone
contains three major nutrients essential for strong and healthy growth.
Only £6.00
