The illustrated growing guide

Saucer Magnolia

Magnolia × soulangeana

Family Magnoliaceae

Est. zones 4-9

Botanical illustration of Saucer Magnolia
Tree · Magnolia × soulangeana

The big goblet-flowered magnolia that stops traffic in early spring — but it blooms so early that a late frost can turn the open flowers to brown mush some years. In frost-prone spots, plant the later-blooming 'Little Girl' hybrids ('Jane', 'Ann') or star magnolia to dodge the freeze. When it works, nothing is more spectacular. Fleshy leaves and a broad low canopy the rest of the year.

TreeFull Sun to Light ShadeModerate waterModerate growthAttracts bees

Where to buy the plant — 1 nursery

Saucer Magnolia — a print from the Flowering Trees collection

From the print shop

Growing saucer magnolia? Hang it.

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I

Overview

Will saucer magnolia suit your garden, and what goes wrong.

Will it thrive where you are?

Enter your ZIP — we look up your USDA hardiness zone (2023 map) and check it against what saucer magnolia actually needs.

Hardy inZones 4-9

Saucer Magnolia at a glance

HardinessUSDA 4–9
Mature size20-30 ft
PollinationBeetle- and bee-pollinated (ancient flower)
Chill requirementNot yet established
Bloom seasonEARLY spring — huge goblet flowers of pink-purple, BEFORE the leaves (frost can brown an open crop)
Harvest seasonNot yet established
Growth rateModerate

Common saucer magnolia problems

  • Scale
  • Magnolia Scale (large, sappy)
  • Almost none significant

II

Growing

Light, water, soil, propagation and the season’s jobs.

How to grow saucer magnolia: light, water & soil

LightFull Sun to Light Shade
WaterModerate; well-drained
SoilRich, slightly acid, well-drained · pH 5.5 - 6.5
FertilizerLight spring feed
PruningAfter flowering (minimal) — Prune right after bloom if needed; it flowers on old wood. Site away from early-morning sun in frost pockets so thawing doesn't brown the buds.
Spacing20 ft

How to plant & propagate saucer magnolia

PropagateSeed (stratify), cuttings, or layering

When to spray saucer magnolia

Dormant season. Horticultural oil for magnolia scale.

Growing season. Oil for scale.

III

The year

What saucer magnolia asks for, month by month.

The saucer magnolia year, month by month

MonthJanFebMarAprMayJunJulAugSepOctNovDec
Bloom

What each band means

  • Bloomflowers open — pollinators working, frost on blossoms is the danger.

The saucer magnolia year as text

  • Jan quiet month
  • Feb quiet month
  • Mar bloom
  • Apr bloom
  • May quiet month
  • Jun quiet month
  • Jul quiet month
  • Aug quiet month
  • Sep quiet month
  • Oct quiet month
  • Nov quiet month
  • Dec quiet month

These are the species' typical months — expect them a few weeks earlier in warm zones and later in cold ones. Watch the plant, not just the calendar.

IV

Ecology & uses

What it does for the garden, and what it is grown for.

Saucer Magnolia in the garden system

  • Understory layer tree
AttractsBees
MoistureFacultative / average
DeerBrowsed — protect young plants
OriginIntroduced

What saucer magnolia is grown for

✓ Not known to be toxic

UseEarly spring drama
UseSpecimen tree
UseSmall yards

Edibility, identification, and traditional-use notes here are general reference — not medical or veterinary advice, and not a claim that any plant treats or prevents anything. Medicinal ratings record how strongly a plant features in herbal tradition, nothing more. Never eat or dose a plant you have not positively identified. More on how to use this library.

V

Cultivars

Named varieties of saucer magnolia, ruled as a catalogue.

Best saucer magnolia varieties & cultivars

'Alexandrina', 'Rustica Rubra'; star magnolia (M. stellata) is smaller, later, more frost-safe; 'Ann'/'Jane' (later-blooming 'Little Girl' hybrids dodge frost)

VI

Sources & plant ID

Where the care distinctions come from, and how the plant is filed.

Research basis

Sources behind this profile

No extension citations are attached to saucer magnoliayet. The care figures below come from the library's own catalogue rather than a traced primary source.

Plant ID

BinomialMagnolia × soulangeana
FamilyMagnoliaceae
TypeTree · Perennial
OriginIntroduced
Invasive riskLow

VII

Where to buy

Third-party nurseries — not Story Thyme Farms.

Third-party nurseries, not Story Thyme Farms. Prices are theirs.

Story Thyme Farms may earn a small commission from these links, at no cost to you — it never changes what we recommend.

VIII

Questions

Saucer Magnolia questions, answered straight.

Is saucer magnolia safe for kids and pets?

Saucer Magnolia is commonly eaten and isn't considered toxic, but "commonly eaten" isn't a guarantee for any particular person or animal — allergies, quantity, and which part you eat all matter. Never eat a plant you haven't positively identified, and check with a vet before letting pets or livestock graze anything new.

How do you propagate saucer magnolia?

Seed (stratify), cuttings, or layering.

IX

Elsewhere

Where saucer magnolia sits in the library.