White Magnolia - A Majestic Flower for the Garden

White magnolias look like carved porcelain on bare spring branches. Meet the best white species for Irish gardens and learn how to guard those blooms from a late frost.

Whites to look for

White-flowered magnolias come in a surprising range. The Yulan magnolia, Magnolia denudata, bears large, cup-shaped, pure white flowers on bare twigs. The star magnolia, Magnolia stellata, is smaller and covered in narrow, many-petalled, starry blooms. In summer, the evergreen Magnolia grandiflora carries huge, creamy flowers, often trained against a warm wall.

All of them show the family's old-fashioned flower structure: parts that are not split into petals and sepals but into similar tepals, arranged in spirals.

The frost problem is worse for white

A brown mark shows quickly on a white petal. In inland Irish gardens the clear nights of March and April are exactly when frost strikes open flowers, so site matters more here than with any other colour.

  • Choose a sheltered, sunny site facing away from the early morning sun.
  • Cover small shrubs with horticultural fleece on frosty nights during flowering.
  • Plant a star magnolia in a container if your garden is exposed; it can be moved.

Against a dark backdrop

White magnolia stands out against dark conifers, brick or a slate-grey sky. That is why it shows up so often in front gardens and around churches. In the language of flowers, white blooms traditionally speak of purity and dignity.

Cut stems

Magnolia branches can be cut for the house just as the buds swell and will open in a warm room, although the petals bruise to brown if handled roughly.

Are the petals safe around animals?

White magnolia is generally treated as low risk for dogs, cats and horses. Even so, large amounts of any plant can disagree with an animal, so ask your vet if a pet has eaten a lot.

Quick facts – Magnolia – White

Colour
white
Latin name
Magnolia
Type
tree or shrub
Flowering
april-may
Light
full sun to partial shade
Water
moderate
Height
300-800 cm
Scent
strong
Toxic to pets
no
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FAQ about Magnolia – White

Which magnolias have white flowers?
Magnolia denudata, Magnolia stellata and the summer-flowering evergreen Magnolia grandiflora all have white blooms.
Why do white magnolia petals go brown?
It is generally treated as low risk for dogs, cats and horses, though chewing any plant can upset a stomach.
Can I cut magnolia branches for indoors?
Yes. Cut when the buds are swelling and keep them in water in a cool room. Handle open petals gently, since they bruise.
Are white magnolias safe for cats and dogs?
It is generally treated as low risk for dogs, cats and horses, though chewing any plant can upset a stomach.

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