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MAGNOLIA sieboldii 'Colossus'
Huge circular white flowers on this much improved form from the well known species. Grows well with us here but needs to be on a bank so you can look up at the flowers
Large
£80.00 each
Full Plant Details - Sun/Soil & other attributes - Click to close
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Good to know
semi- to fully double flowers much larger than the species -
Pests & Diseases
Scale insects, honey fungus, coral spot -
Place of origin
Garden origin. August Kehr, North Carolina -
DeciduousOblong to ovate-elliptic leaves to 30cm (12in)long and 15cm (6in) wide, dark green above, grey-green and downy beneath.
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White
White with cerise anthers -
Cup-shapedFlowers are erect at first, nodding as they mature, 15cm (6in) across with 10-17 tepals
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Fully hardy
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Height
6m (20ft) -
Spread
6m (20ft)
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Tall Shrub
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Hardy - very cold winter
Hardy in all of UK and northern Europe. Plant can possibly withstand temperatures down to -20°C (-4°F) -
Fertile moist well-drained soilHumus-rich.
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Neutral to acid soil
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Full sun
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Partial shade
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Mature Size6m (20ft)
6m (20ft)
View Planting Tips and Care Advice
Magnolia - A guide to sizing and pricing
Magnolia - Care Guide
- Cultivation of Magnolias
- Pruning Magnolias - Video Tip ondemand_video
- Pruning shoots on grafted rootstock - Video Tip ondemand_video
- Pruning small & large shoots below the graft - Video Tip ondemand_video
- Pruning & Shaping Magnolia - Video Tip ondemand_video
- Soil Conditions
- Planting Locations
- Planting a magnolia - Video Tip ondemand_video
- Secondary Flowering - Video Tip ondemand_video
- Scraping deadwood to see if alive - Video Tip ondemand_video
- Pests and Diseases
- Magnolia Slug Protection - Short Video Tip ondemand_video
- Slug Protection - Longer Video Tip ondemand_video
- Removing Ivy - Video Tip ondemand_video
- Scale Insect on Magnolias - Video Tip ondemand_video
- Further Reading
Magnolia - Hybridisation
Magnolia - Propagation
Magnolia - Spotlight Videos
- Best yellow magnolias - Video Tip ondemand_video
- Magnolia 'Atlas' x Magnolia 'Lanarth' - Video Tip ondemand_video
- Magnolia Colours - Video Tip ondemand_video
- Magnolia 'Caerhays Belle' - Video Tip ondemand_video
- M. campbellii in late January - Video Tip ondemand_video
- Magnolia campbellii 'Alba' & 'Strybing White' - Video Tip ondemand_video
- M. cambellii 'Sidbury' - Video Tip ondemand_video
- Magnolia globosa - Video Tip ondemand_video
- Magnolia insignis - Video Tip ondemand_video
- Magnolia 'Lanarth' - Video Tip ondemand_video
- Magnolia 'Lois', 'Peachy' & 'Limelight' - Video Tip ondemand_video
- M 'Lemon Star', 'Tranquility', 'Peach Brandy' & 'Banana Split' - Video Tip ondemand_video
- Magnolia 'March till Frost', 'Star Wars', 'Yakeo', 'Cleopatra', 'Black Tulip' - Video Tip ondemand_video
- Magnolia 'Mighty Mouse' - Video Tip ondemand_video
- Magnolia 'Peachy' and 'Daybreak' Video Tip ondemand_video
- M. 'Pink Flush' in June - Video Tip ondemand_video
- Magnolia 'Tikitere' - Video Tip ondemand_video
- M. 'Star Wars', doltsopa & veitchii - Video Tip ondemand_video
- M. sieboldii, sieboldii sinensis, x wieseneri, 'Summer Solstice' - Video Tip ondemand_video
- M. sprengeri 'Diva' - Video Tip ondemand_video
- M. 'Altas', 'Raspberry Fun', 'Sunrise' & x veitchii - Video Tip ondemand_video
- Magnolia 'F.J. Williams' - Video Tip ondemand_video
- Magnolia rostrata - Video Tip ondemand_video
- Magnolia 'Tropicana' - Video Tip ondemand_video
- Magnolia 'Todd's Forty Niner' - Video Tip ondemand_video
- M. 'Todd's Forty Niner' Late January - Video Tip ondemand_video
- Various Magnolias in early March - Video Tip ondemand_video
- Michelia foveolata - Video Tip ondemand_video
- Michelia macclurei - Video Tip ondemand_video
- 5 Michelias in April - Video Tip ondemand_video
- M. 'Woodsman' x 'Patriot' - Video Tip ondemand_video
- Unnamed hybrids - Video Tip ondemand_video
Planting to avoid allergic reactions and asthma
Shrubs and Trees - Seeds - 1) Collecting Seeds
- When is the right time to collect seeds?
- When are seeds actually ripe and ready for collection?
- Magnolia seed collection - Video Tip ondemand_video
- Lithocarpus Seed Collection - Video Tip ondemand_video
- Cornus capitata seed collection - Video Tip ondemand_video
- Rhododendron seed collecting - Video Tip ondemand_video
- Camellia seed collection - Video Tip ondemand_video
Shrubs and Trees - Seeds - 2) Storing Seeds
Shrubs and Trees - Seeds - 3) Planting Seeds
