Millais Nurseries
Magnolia sieboldii
Item: MSIEB
In stock
Summer
White
To -20 °C
175-200cm
Scented
No
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(H6) Pure white nodding fragrant flowers are egg shaped in bud, turning outwards as the petals expand. Long lasting from May to August. Spectacular red fruits in autumn. Height 175-200cm in 10 years, turning into a broad spreading tree. Best in moist acid soils, but will tolerate neutral soils with good organic content.
Good to know
Magnolias consist of deciduous and evergreen large shrubs or feature size trees, many with nicely scented flowers in spring and summer. They provide great structure in the garden, as well as stunning flowers in shades of white, pink and purple in early spring, followed by the yellow flowering varieties which tend to be a little later, and can avoid the frosts.
We have an excellent modern range including the latest varieties from top breeders around the world. Being new and grafted, they do cost a bit more, but they are good value compared to other suppliers. Due to delivery constraints, we are only able to send young plants, but these do establish better than mature stock anyway.
Magnolias prefer full sun, cool roots and shelter from strong winds. They are not suitable for growing in patio pots, which they will quickly outgrow. Plant in free draining, moisture retentive neutral to slightly acidic soil, deeply worked with added ericaceous compost. After planting, feed with a good ericaceous fertilizer and mulch well. Apply slow release fertilizer every spring whilst the plant is establishing, at the rate of a teaspoon per 3 litre plant, rising to a handful for a more mature plant. Most stellata hybrids will flower from the 4 litre size, and soulangeana hybrids will flower once they reach about 2 metres high, but be aware that some magnolias (eg campbelli) can take up to 40 years to flower.
Magnolias were amongst the first plants on Earth to reproduce using flowers pollinated by insects. They are native to America and Asia, but not Europe. The Magnolia was named by Linnaeus in commemoration of Pierre Magnol, who was Louis XIV's doctor and a professor of Botany. Magnolia grandiflora was introduced into Britain from America in 1734. The first magnolias from China arrived around 1780, and proved much hardier than those from America.
Please note: Deer like to rub their antlers on the stems, so a 1 metre high ring of netting protection may be necessary for a few years if you have deer present.
For further advice, For further advice, see here
The Basics
Ideal soil
Acidic soil, good organic content, pH 4.5-6.0. Inkarho range of rhododendrons will tolerate soils up to pH7.5
Sun or Shade
Light dappled shade is best for most varieties.
Shelter
Refer to hardiness rating. Give young plants protection.
Avoid close to trees, roots, invasive weeds, walls, hot patios, dry banks and waterlogged soils. Do not use weed matting or stone mulch
Plant spacing
Use the height shown in 10 years as a guide to the distance between each plant. Allow room for plant to fill out. If planting closer for instant impact, be prepared to move plants after a few years.
Compost
- 3 litre pot, dig in 10-20 litres of ericaceous compost.
- 7.5 litre pot, dig in 20-30 litres of ericaceous compost.
- 70-80cm specimen, dig in 60 litres of ericaceous compost.
- 100-120cm specimen, dig in 120 litres of ericaceous compost.
Planting depth
Plant high in the ground, with the top of the rootball visible.
Feeding
Slow-release ericaceous feed recommended in March and straight after flowering.
Mulch
Recommended every few years.
Water
The key ingredient! Keep moist all season, especially the critical time at end of June for flower bud initiation. Tap water is better than no water. Heavy dose at least once per week in dry weather.
Drainage
Ensure good drainage in winter, especially with yellow varieties. Avoid waterlogged sites.
Pruning
Not normally required. Tidy wayward shoots after flowering. Evergreen azaleas and Bloombux can be clipped into a low hedge.
Deadheading
Remove old flower-heads, particularly on young or weak plants.
For further advice see here
Size Guide
