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Shrub · Magnoliaceae family

Star magnolia

Magnolia stellata

Full sun to part shade in a garden 3 ft 3⅜ in–4 ft 11 in × 3 ft 3⅜ in–4 ft 11 in Flowers March–April to −84 °F
Flower colors Click a color

In short a 10-second read

SunFull sun to part shade
in a garden after 10 years3 ft 3⅜ in–4 ft 11 in
in the wild up to 16 ft 4⅞ in
spacing 9 ft 10⅛ in
FlowersMarch–April
PlantingMarch–April, October–November
WinterNo winter protection

Where to plant and how much to water

Sun, soil and water.

It grows best in full sun to part shade, in average to moist soil.

Sun

Sun6 hours or more
Part shade3–6 hours
Shadeunder 3 h

Soil

acidic to neutral soil
acidicneutralalkaline
average to moisthumus-richloamy

Watering

keep the soil evenly moistdo not waterlogless when it rains

Frost

−84 °F
no winter protectionleafless in winter

How much space it takes

Mature size.

The mature plant next to a person (69 in).

3 ft 3⅜ in6 ft 6¾ in9 ft 10⅛ in13 ft 1½ in16 ft 4⅞ in9 ft 10⅛ in–16 ft 4⅞ inspread 9 ft 10⅛ in–16 ft 4⅞ in
9 ft 10⅛ in–16 ft 4⅞ in× spread 9 ft 10⅛ in–16 ft 4⅞ in

Plant 9 ft 10⅛ in apart.

Reaches maturity in about 10–20 years. The final size depends on the cultivar and the spot — we give the range from smallest to largest.

Calendar

Through the year.

Typical for a temperate climate (four seasons). The line shows the current month.

The year at a glance

Flowers: JanuaryFlowers: FebruaryFlowers: MarchFlowers: AprilFlowers: MayFlowers: JuneFlowers: JulyFlowers: AugustFlowers: SeptemberFlowers: OctoberFlowers: NovemberFlowers: DecemberPlanting: JanuaryPlanting: FebruaryPlanting: MarchPlanting: AprilPlanting: MayPlanting: JunePlanting: JulyPlanting: AugustPlanting: SeptemberPlanting: OctoberPlanting: NovemberPlanting: DecemberFeeding: JanuaryFeeding: FebruaryFeeding: MarchFeeding: AprilFeeding: MayFeeding: JuneFeeding: JulyFeeding: AugustFeeding: SeptemberFeeding: OctoberFeeding: NovemberFeeding: DecemberJanFebMarAprMayJunJulAugSepOctNovDec
FlowersPlantingFeeding
Now, in October: a good time for planting (container plant).
JanFebMarAprMayJunJulAugSepOctNovDec

Flowers

JanFebMarAprMayJunJulAugSepOctNovDec

March–April · white or pink

Planting

JanFebMarAprMayJunJulAugSepOctNovDec

container plant: March–April, October–November

Feeding

JanFebMarAprMayJunJulAugSepOctNovDec

May–June

What to plant now (October) full list in October (243) →

Feeding

Nutrition.

Horn meal

up to 0.13 oz/sq ft a year, if the soil needs it · May–June

JanFebMarAprMayJunJulAugSepOctNovDec

Pests and diseases

Common problems and what to do.

The most common problems in Central Europe. Protection is listed from the gentlest option.

High riskMedium riskLow riskRisk for this plant according to the source · no label = no documented level

What you will see

Possible.

The source says: star magnolia is among the most commonly attacked and can be severely infested.

When to look

All year

How to protect

  1. Prevention
    • tolerate a light infestation – healthy plants cope with it
  2. By hand all yearremove adult scales and egg threads by hand (this may not be enough in a heavy infestation)
  3. Biological all seasonencourage ladybirds, parasitoid wasps and birds
Scale insectspest · all yearHigh risk

What you will see

Possible.

The source says: star magnolia is among the most commonly attacked and can be severely infested.

When to look

All year

How to protect

  1. Prevention
    • tolerate a light infestation – healthy plants cope with it
  2. By hand all yearremove adult scales and egg threads by hand (this may not be enough in a heavy infestation)
  3. Biological all seasonencourage ladybirds, parasitoid wasps and birds
More about this problem

Late frost damage

physiological disorder

What you will see

Late frosts damage flower buds.

How to protect

  1. Prevention
    • plant in a spot sheltered from cold wind
    • full sun or partial shade
Late frost damagephysiological disorder

What you will see

Late frosts damage flower buds.

How to protect

  1. Prevention
    • plant in a spot sheltered from cold wind
    • full sun or partial shade

What you will see

Root rot and dieback of the shrub; white fungal sheets under the bark at the base.

When to look

Mushrooms in late summer and fall; mycelium in the soil all year

How to protect

  1. Prevention
    • do not plant in places with honey fungus
    • remove infected shrubs together with the roots
  2. By hand when presentdig out the infected shrub with its roots
Honey fungusdisease · mushrooms in late summer and fall; mycelium in the soil all year

What you will see

Root rot and dieback of the shrub; white fungal sheets under the bark at the base.

When to look

Mushrooms in late summer and fall; mycelium in the soil all year

How to protect

  1. Prevention
    • do not plant in places with honey fungus
    • remove infected shrubs together with the roots
  2. By hand when presentdig out the infected shrub with its roots
More about this problem
Sources (4)

Frequently asked

Quick answers.

When does star magnolia flower?

In March–April; the flowers are white or pink.

Does star magnolia tolerate shade?

It tolerates part shade (3–6 hours of sun), but not full shade.

How much space does star magnolia need?

At maturity 9 ft 10⅛ in–16 ft 4⅞ in wide and 9 ft 10⅛ in–16 ft 4⅞ in tall; recommended spacing 9 ft 10⅛ in.

Late frost damage — what can you do?

plant in a spot sheltered from cold wind

Scale insects — what can you do?

tolerate a light infestation – healthy plants cope with it remove adult scales and egg threads by hand (this may not be enough in a heavy infestation)

Sources (14) Checked 24 October 2026

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