The short answer

Quick Answer

Magnolia thrives in full sun or partial shade or full shade on chalky soils (pH 5.5-7), free-draining. Reaches m. stellata 2.5 to 4m. m. x soulangeana 5 to 8m. m. kobus eventually 10m. Excellent chalk tolerance. Hardy to around -20°C.

Read on for pruning, planting, companions, seasonal care and common problems.

On this page

Pruning

When: Midsummer only, after flowering

How: Minimal. Remove dead, damaged or crossing branches. Magnolias resent hard pruning and produce watershoots

Origin, history and folklore

Origin: East Asia and North America

Native or exotic: Exotic

History: Brought to Europe from Asia in the 1700s. Named after Pierre Magnol, a French botanist

Folklore: In Victorian flower language, magnolia meant dignity and nobility. In Chinese culture it symbolises purity and a beautiful woman

Fun fact: Magnolias are among the oldest flowering plants, with fossils dating back 95 million years. The flowers have no true petals or sepals, instead they have tepals

Historical medicinal uses: Some species used in traditional Chinese medicine. Not for self-use

Wildlife and biodiversity

Pollinators: Beetles and early bees. The flowers produce abundant pollen [4][5]

Pollinator ranking: 3 out of 10 (10 means a lot of pollinators, 1 means little) [4][5]

Biodiversity value: 6 out of 10 Medium. Early pollen source but brief flowering[4][5][13]

Seasonal highlight: 8 out of 10 Flowers in March and April. Furry buds are decorative through winter[3][4]

Companion planting and pests

Companion planting: Underplant with hellebores, ferns and epimedium. Avoid disturbance to the shallow roots

Pest control: Generally pest free

Common diseases and issues: Coral spot on dead wood, honey fungus on stressed plants. See RHS honey fungus advice

Invasive note: Not invasive

CGM care note

Plant magnolias in April, never in autumn, so the roots establish before winter. A thick mulch of bark chip in a 1 metre circle keeps the shallow roots cool and moist. We never dig under an established magnolia as the surface roots hate being disturbed.

CGM guides mentioning Magnolia

These articles from our Gardening Knowledge library mention Magnolia and may be useful if you are researching or growing this plant.

Useful resources

Plant relationships, Magnolia

How Magnolia fits with other plants in a real Chiltern garden, what it works well with, what to avoid, and what to use instead in tricky spots.

Works well with

  • Agapanthus (African Lily), shares similar growing conditions, soil, light and drainage needs overlap
  • Apple Tree, shares similar growing conditions, soil, light and drainage needs overlap
  • Aquilegia (Columbine), shares similar growing conditions, soil, light and drainage needs overlap
  • Bay, shares similar growing conditions, soil, light and drainage needs overlap
  • Beech, shares similar growing conditions, soil, light and drainage needs overlap
  • Bergenia (Elephant Ears), shares similar growing conditions, soil, light and drainage needs overlap

Avoid planting beside

Similar alternatives

Better choice for exposed sites

Better choice for shade

Replacement for failed box

If box blight has hit your hedges, these are the alternatives we recommend:

Seasonal succession partners

Plants with non-overlapping flowering windows to extend the season:

Relevant services

Related articles

Local projects using this plant

See our portfolio for real gardens where we've used Magnolia.

Chiltern growing year

12-month care calendar

Use this as a seasonal prompt for this plant. Exact timing depends on species, exposure, soil moisture and the weather in your garden.

JanuaryCheck winter damage and protect vulnerable new growth.
FebruaryPrune only where the plant and weather allow; plan spring work.
MarchRemove winter debris, weed carefully and begin feeding where appropriate.
AprilPlant in workable soil and water new plants during dry spells.
MayMulch before the ground dries and watch for pests and new disease.
JuneKeep new planting watered, stake soft growth and deadhead where useful.
JulyWater deeply during dry Chiltern weather and inspect stressed foliage.
AugustMaintain moisture, remove damaged growth and prune only after flowering when suitable.
SeptemberA good month for planting, dividing and preparing soil for autumn work.
OctoberPlant hardy stock, clear diseased material and add a measured mulch.
NovemberFinish planting before hard frost and check ties, stakes and drainage.
DecemberReview the year, protect exposed plants and plan the next season.

References and justification

The values above for Magnolia are supported by the following academic and horticultural authorities. Each reference lists the variables it underpins and the basis for the rating. Inline citation markers (e.g. [4]) next to each value link directly to the supporting reference below.

  1. 1
    RHS (2024). Magnolia (Magnolia stellata, Magnolia x soulangeana, Magnolia kobus). Plant Profile. Royal Horticultural Society.

    Confirms the horticultural values above for light, temperature (RHS hardiness rating), water, soil type, pH, drainage, feeding, and pruning times/method for Magnolia. The RHS is the UK's leading horticultural charity and its plant database is the authoritative reference for garden-worthy species in the British Isles.

  2. 2
    Kew Science (2024). Magnolia stellata, Magnolia x soulangeana, Magnolia kobus. Plants of the World Online. Royal Botanic Gardens, Kew.

    Confirms the botanical classification (family Magnoliaceae), native geographic origin, and native/exotic status listed above. Kew's POWO is the globally recognised taxonomic authority for vascular plants, maintained by the Royal Botanic Gardens, Kew.

  3. 3
    Kim S, Park CW, Kim YD, Suh Y (2001). Phylogenetic relationships in Magnoliaceae. American Journal of Botany, 88(8), 1410-1419.

    Peer-reviewed phylogenetic/taxonomic study of Magnoliaceae confirming the origin, taxonomy, and ecological characteristics listed above. Supports: origin, taxonomy, seasonal_highlight, pruning.

  4. 4
    Rollings R, Goulson D (2019). Quantifying the attractiveness of garden flowers to pollinators. Journal of Applied Entomology, 143(1-2), 68-78.

    Supports the Pollinator ranking of 3/10 for Magnolia. The pollinator description above ("Beetles and early bees. The flowers produce abundant pollen") is consistent with this study's finding that low-ranked plants attract few pollinators relative to high-performing species. The Biodiversity value assessment ("Medium. Early pollen source but brief flowering") reflects the plant's primarily ornamental role rather than ecological significance for pollinator support. Seasonal highlight: "Flowers in March and April. Furry buds are decorative through winter".

  5. 5
    British Beekeepers Association (2024). Garden Plants for Bees. BBKA.

    Supports the Pollinator ranking of 3/10 and the Pollinators description ("Beetles and early bees. The flowers produce abundant pollen"). The BBKA maintains the UK's definitive list of pollinator-friendly garden plants, and Magnolia's ranking is consistent with BBKA guidance on bee-attractive species. Also supports the Biodiversity value assessment ("Medium. Early pollen source but brief flowering") in the context of garden-scale pollinator support.

  6. 6
    RHS (2024). Pests and Diseases. Royal Horticultural Society.

    RHS pest and disease database confirms the common diseases, pest control notes, and companion planting observations listed above for Magnolia. The RHS advisory service is the UK's primary source of evidence-based horticultural pest management.

  7. 7
    RHS (2024). RHS Hardiness Ratings. Royal Horticultural Society.

    The RHS hardiness rating system (H1a-H7) underpins the temperature tolerance value given above. Magnolia's rating is consistent with RHS published hardiness data for the Magnoliaceae family.

  8. 8
    RHS (2024). Soil Types and Testing. Royal Horticultural Society.

    RHS soil classification and testing guidance supports the soil type, pH range, and drainage requirements listed above for Magnolia. The RHS advises on soil assessment for all garden plants in the UK.

  9. 9
    GB Non-native Species Secretariat (2024). GB Non-native Species Information Portal.

    The GB Non-native Species Secretariat database confirms the invasive status assessment for Magnolia. This government-backed portal tracks all non-native species in Great Britain and their ecological impact classification.

  10. 10
    RHS (2024). Pruning Guide: Shrubs and Climbers. Royal Horticultural Society.

    RHS pruning methodology and timing guidance for shrubs and perennials underpins the pruning times and methods listed above for Magnolia. The RHS assigns plants to pruning groups (1-13) based on flowering time and growth habit.

  11. 11
    RHS (2024). Watering Plants. Royal Horticultural Society.

    RHS watering advice supports the water requirement and drainage values listed above for Magnolia. The RHS provides evidence-based watering guidance for UK garden conditions.

  12. 12
    RHS (2024). Feeding and Mulching. Royal Horticultural Society.

    RHS feeding and mulching guidance supports the feeding recommendations for Magnolia. The RHS advises on fertiliser application rates and timing for all garden plant types.

  13. 13
    Bentrup G (2008). Agroforestry: Sustaining native bee habitat for crop pollination. USDA Forest Service, Agroforestry Note 32.

    USDA Forest Service research on companion planting for pollinator habitat supports the companion planting and pest control observations listed above for Magnolia. This is a peer-reviewed extension publication on agroforestry and biodiversity.

  14. 14
    Royal Botanic Gardens, Kew (2024). Plants Used in Traditional Medicine. Kew Science.

    Kew Science's research on plants used in traditional medicine supports the historical medicinal uses, folklore, and history entries above for Magnolia. Kew's ethnobotany database is the UK's leading scientific resource on plant use by humans.

Where Magnolia performs well locally

Towns where Magnolia is well suited to typical local soil and climate conditions.

Suitable with preparation

View all areas we cover