Little Gem magnolia

Magnolia grandiflora 'Little Gem'. Family Magnoliaceae. Tree.

Also called Little Gem southern magnolia, Dwarf southern magnolia.

Little Gem is a compact, upright southern magnolia with glossy evergreen leaves and large, fragrant white flowers, often produced while the tree is still young. It grows more slowly and stays smaller than the species, but it is still a substantial tree rather than a permanently small shrub.

Hardiness

USDA zones 7a to 10b

UK hardiness: H5 (hardy, -10 to -15°C)

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Grows outdoors in the shaded zones. Select a zone to see what else grows there.

Little Gem magnolia
Magnolia grandiflora, the species.Photo: Douglas Goldman
Little Gem magnolia
Magnolia grandiflora, the species.Photo: Pmsyyz
Little Gem magnolia
Magnolia grandiflora, the species.Photo: Kurt Stueber

At a glance

Sun
Full sun to partial shade; flowering is best in sun. In cooler climates, choose a warm position sheltered from cold, drying winds.
Water
Water regularly while establishing, keeping the root zone moist but not waterlogged. Established trees tolerate short dry spells, but need deep watering during prolonged drought.
Soil
Moist, well-drained, humus-rich soil, preferably acidic to neutral. Avoid waterlogged ground and very chalky soil, which can cause yellow leaves.
Height
20-25 ft (6-7.6 m), sometimes taller with age
Spread
10-15 ft (3-4.6 m)
Flowers
Large, fragrant, creamy-white flowers from late spring through summer, with occasional flowers into autumn in warm climates.
Foliage
Evergreen. Leathery, glossy dark-green leaves with rusty-brown felt underneath; smaller and more closely spaced than those of typical southern magnolia. Older leaves shed mainly in spring and early summer.
Growth
Slow to moderate; growth is faster in warm climates with reliable moisture.
Care needed
Medium

The year at a glance

  • Pollinators
  • Heat tolerant
  • Wildlife
  • Low allergen
  • Fragrant
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Flowers
Fruit
Plant

Northern hemisphere months. In Australia, shift them by six.

Difficulty
Moderate
Toughness
Fairly tough

Will it suit your garden?

Pick your zone, country, light and whether you have pets.

Full sun is 6 or more hours of direct sun a day, part shade 3 to 6 hours, shade under 3.

How it grows

  1. Planting day

    7 ft (2 m)

  2. After 1 year

    7 ft (2.2 m)

  3. After 2 years

    8 ft (2.5 m)

  4. After 3 years

    9 ft (2.7 m)

  5. After 5 years

    10 ft (3.2 m)

About 20 years to full size.

From a typical nursery size, at an average rate for this kind of plant. A rule of thumb, not a forecast.

Good to know

Cats and dogs
Safe
Native to
the US
Growth rate
Moderate

Care

Jobs through the year

WaterApr–May, Sep–Oct, every 14 days
Deep-water established trees if soil is dry; check young root balls more often.
WaterJun–Aug, every 7 days
Water deeply during prolonged dry spells, skipping when rain keeps the roots moist.
MulchApr
Maintain 5–8 cm of organic mulch over shallow roots, clear of the trunk.
PruneJul–Aug
After the main flowering flush, remove damaged branches and lightly shorten stray shoots.
ProtectJan–Mar, Nov–Dec
Shelter young trees from severe frost and drying winds; not reliably hardy in zone 6.
  • Plant with the root flare at soil level, allowing room for its eventual canopy and shallow, spreading roots.
  • Water deeply during dry weather for the first two growing seasons; check the root ball rather than watering by a fixed schedule.
  • Apply 2-3 in (5-8 cm) of organic mulch over the root zone, keeping it clear of the trunk.
  • Feed lightly in spring only if growth is weak or a soil test indicates a deficiency; avoid heavy lawn feeding beneath the canopy.
  • Avoid digging beneath the tree or repeatedly moving it; its fleshy roots resent disturbance.

Pruning. Prune lightly after the main flowering flush in summer to remove damaged branches or shorten stray shoots. Retain lower branches if space allows, and avoid hard pruning or topping.

Through the year

Spring
Plant in colder regions once the soil is workable, and water the root ball thoroughly.
Spring
Refresh mulch and check pale foliage before feeding; natural shedding of older leaves is normal.
Summer
Water deeply during prolonged dry spells, especially around newly planted trees.
Summer
After the main flowering flush, remove damaged branches and make any minor shaping cuts.
Autumn
Plant in mild climates while the soil remains warm; clear fallen leaves from paths and drains.
Winter
Check young trees for wind rock and protect recently planted specimens from severe cold, drying winds.

In the garden

  • Use as a compact specimen tree in a lawn or generous border, leaving room for the mature canopy.
  • Plant as an evergreen screen where year-round privacy is needed, allowing enough space to avoid constant clipping.
  • Place near a terrace to enjoy the scented flowers, but keep it far enough back that fallen leaves and seed cones do not clutter seating areas.
  • Combine with camellias and shade-tolerant groundcovers for a layered evergreen planting, keeping companions toward the canopy edge.

Garden styles it suits: Southern, Traditional, Architectural minimal, Formal, Sensory garden and White garden.

Plant it with: Camellias, Azaleas, Oakleaf hydrangeas, Lilyturf, Cast iron plant and Autumn fern.

Wildlife: Flowers provide pollen for beetles and other insects. Birds may eat the red-coated seeds, and the dense evergreen canopy offers shelter.

Problems to watch for

  • Yellow leaves with green veins: often caused by alkaline soil or poor root conditions. Check soil pH and drainage before applying iron treatments or fertilizer.
  • Magnolia scale: look for raised bumps on stems, sticky honeydew and black sooty mould. Remove heavily infested small shoots and use a locally approved horticultural oil when crawlers are active, following the label.
  • Leaf scorch and winter browning: reduce exposure to cold, drying winds, maintain mulch and water during dry periods when the ground is not frozen.
  • Root rot and decline in wet ground: improve drainage before planting, keep the root flare exposed and avoid frequent watering of already wet soil.

Safety

Not known to be toxic to cats, dogs, horses or people. No part is recognized as a significant poisoning hazard, although eating leaves, bark or seed cones may cause stomach upset or choking.

Easily confused with

  • Southern magnolia (Magnolia grandiflora)

    The typical species develops into a much larger tree with a broader crown and generally larger leaves; 'Little Gem' has smaller leaves and a denser, more upright habit.

  • Teddy Bear magnolia (Magnolia grandiflora 'Southern Charm')

    Usually has a denser, more conical crown and broader, more strongly cupped leaves with conspicuous brown undersides. Young plants can be difficult to distinguish without a reliable label.

  • Sweetbay magnolia (Magnolia virginiana)

    Has thinner leaves with silvery rather than rusty-brown undersides, smaller flowers, and foliage that may be deciduous in colder climates.

The name

Magnolia honours the French botanist Pierre Magnol, grandiflora means large-flowered, and 'Little Gem' refers to this cultivar's smaller stature.

Propagation. Named plants must be propagated vegetatively to retain their characteristics. Semi-ripe cuttings, air layering or grafting are possible, but rooting can be slow and difficult; seed-grown plants will not reliably resemble 'Little Gem'.

Checked against open data

Accepted botanical name
Magnolia grandiflora
In the US and Canada
Native in the lower 48 states. Introduced in Puerto Rico.
Native range
Alabama, Florida, Georgia, Louisiana, Mississippi, North Carolina, South Carolina and Texas.
Measured
Soil pH 4.5 to 6.5. Average height 2450 cm.

Sources: GBIF (CC BY 4.0), USDA PLANTS and Trefle (CC BY 4.0). The care and design notes are LandscapeGPT's own.

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