Best magnolia cultivars by region
The magnolia genus (*Magnolia*) spans deciduous and evergreen trees and shrubs from temperate North America, Asia, and Central America. Per NC State Extension, it contains over 200 species plus hundreds of cultivars. For North American gardeners, the most relevant species sort into three groups:.
—- title: "Best magnolia cultivars by region" slug: best-magnolia-cultivars hub: plants category: "Cultivar guide" description: "A sourced guide to the best magnolia cultivars for northern, mid-Atlantic, and southern gardens, with zone ranges, bloom timing, and site requirements." date: 2026-06-10 updated: 2026-06-10 author: "Thomas A." reading_time: 9 —-
The magnolia genus (Magnolia) spans deciduous and evergreen trees and shrubs from temperate North America, Asia, and Central America. Per NC State Extension, it contains over 200 species plus hundreds of cultivars. For North American gardeners, the most relevant species sort into three groups: the iconic spring-blooming deciduous magnolias (including M. stellata, M. × soulangeana, and the 'Little Girl' hybrids), the summer-blooming M. grandiflora and its cultivars for southern landscapes, and the native M. virginiana (sweetbay magnolia) for broad adaptation.
I don't grow magnolia at my place in Melville, Long Island, though neighbors have M. × soulangeana that bloom magnificently in late April — and get hit by late frost at least two years in five. That late-frost vulnerability is the defining selection pressure for this genus in the Northeast.
Northern gardens (zones 4—6)
Magnolia stellata (Star magnolia)
Magnolia stellata is native to Japan, hardy in zones 4—8, and blooms the earliest of commonly grown magnolias — typically late March to early April in zone 6 — which makes it also the most vulnerable to frost damage, per Missouri Botanical Garden. The multi-petaled (12—18 tepals) white flowers are held on a large shrub or small tree, 15—20 feet at maturity.
Best cultivars for the North:
- 'Royal Star' — most cold-hardy selection; blooms slightly later (by about 1 week) than the species, reducing frost risk; per UMN Extension, rated zone 4b; white double flowers
- 'Centennial' — larger flowers (up to 5 in.) than the species; white; zone 4; 20 ft
- 'Waterlily' — pink buds opening to white flowers; zone 5; slightly later bloom than 'Royal Star'
'Little Girl' hybrids (US National Arboretum series)
Developed at the US National Arboretum in the 1950s—70s by crossing M. liliiflora 'Nigra' × M. stellata 'Rosea', the 'Little Girl' series blooms 2—4 weeks later than M. × soulangeana, significantly reducing late-frost flower bud damage in zones 4—6. Per Penn State Extension, these are among the most reliable late-frost avoiders for northern gardeners.
The named cultivars (girls' names):
- 'Ann' — deep reddish-purple buds, lighter purple inside; 8—10 ft; a standard selection and one of the most cold-hardy (zone 4—8)
- 'Betty' — large flowers, purple-red outside, white inside; 10—15 ft; among the best in the series for flower size
- 'Jane' — fragrant; red-purple flowers; 10—15 ft; zone 4—8; late bloom timing helps most in zone 5—6
- 'Susan' — dark purple-red, twisted tepals; 10—15 ft; consistent performer in Penn State trials
- 'Pinkie' — pale pink, slightly less vivid than the others; sometimes available from specialty nurseries
Mid-Atlantic gardens (zones 6—7)
Magnolia × soulangeana (Saucer magnolia)
The most widely grown deciduous magnolia in the eastern US. Per Missouri Botanical Garden, it blooms March—April (in zone 6—7) with large white, pink, and purple flowers before leaf-out, reaches 20—30 feet, and is hardy in zones 4—9. The problem: it blooms early and is frequently caught by late frosts in zones 5—6, turning flowers brown overnight.
Best-performing cultivars:
- 'Alexandrina' — deep rose-purple exterior; one of the largest-flowered selections; per Missouri Botanical Garden, 20—25 ft
- 'Brozzonii' — late-blooming among soulangeana types; white flowers with light pink base; 20 ft
- 'Lennei' — large goblet-shaped flowers, dark rose-purple outside; per Clemson HGIC, blooms later than most which helps in zone 6
- 'Rustica Rubra' (also 'Rubra') — deep rose-red flowers; 20—25 ft; early blooming, so highest frost risk in this group
'Galaxy' and 'Spectrum' (US National Arboretum)
Later introductions from the National Arboretum, these are hybrids of M. liliiflora and M. sprengeri var. diva. Per Penn State Extension, they bloom 2 weeks later than M. × soulangeana, reducing frost risk.
- 'Galaxy' — 35 ft; reddish-purple flowers, 10+ tepals; zones 5—9
- 'Spectrum' — 35 ft; deep pink-purple, wider tepals; zones 5—9; better frost avoidance than 'Galaxy'
Southern gardens (zones 7b—10)
Magnolia grandiflora (Southern magnolia)
Magnolia grandiflora is native to the southeastern US, hardy in zones 6b—10, and is the iconic evergreen magnolia — large glossy leaves, fragrant white flowers 8—12 inches across, from May through August. Per UF IFAS Extension, it can reach 60—80 feet in the landscape in zone 9, though most cultivars are smaller.
Cultivar selection matters enormously for this species. Size range spans from 12-foot 'Little Gem' to 80-foot seedling specimens.
Best cultivars:
- 'Little Gem' — 15—20 ft tall, 7—10 ft wide; per UF IFAS, earliest and heaviest-blooming of the compact forms; begins flowering at 2 years old versus 10+ years for seedlings; zones 7—9
- 'Bracken's Brown Beauty' — 30—50 ft; the most cold-hardy grandiflora selection, reliably hardy to zone 5b per NC State Extension; rich brown leaf undersides; excellent for the Piedmont and transition zone
- 'Edith Bogue' — 35—40 ft; cold-hardy to zone 6a; per Clemson HGIC, one of the standard zone 6 evergreen magnolias for the Carolinas
- 'D.D. Blanchard' — 50—65 ft; deep orange-brown leaf undersides; heavy flowering; zones 7—9; a commercial standard in the Deep South
- 'Kay Parris' — compact (20—25 ft); per NC State Extension, begins flowering at 2 years from planting; excellent for smaller southern landscapes
Magnolia virginiana (Sweetbay magnolia)
Native to coastal plain from Massachusetts to Florida, zones 5—10. Per Missouri Botanical Garden, it grows 10—35 ft, tolerates wet soils (unique among magnolias), and produces lemon-scented white flowers 2—3 inches across from May through July. Semi-evergreen in zone 7, fully evergreen in zone 9—10.
Cultivar: 'Jim Wilson' (Moonglow) — more cold-hardy and semi-evergreen further north than the species; per Missouri Botanical Garden, useful to zone 5b in sheltered sites.
Common problems
| Symptom | Cause | Fix |
|---|---|---|
| Brown, papery flowers overnight | Late frost damage | Choose later-blooming cultivars ('Little Girl' series, 'Lennei'); nothing reversible after damage |
| Yellow leaves with green veins | Iron or manganese chlorosis from high pH soil | Test soil pH; magnolias prefer 5.5—6.5; apply sulfur if pH >7.0 |
| Dieback of branches on grandiflora north of zone 7 | Cold damage | Select cold-hardy forms: 'Bracken's Brown Beauty', 'Edith Bogue' |
| Black sooty coating on leaves | Sooty mold following scale insect infestation | Treat scale with horticultural oil in late winter; sooty mold clears on its own |
Frequently asked questions
Which magnolia is best for a small yard in zone 6? The 'Little Girl' hybrids — particularly 'Ann', 'Betty', or 'Jane' — are the best combination of manageable size (8—15 ft), later-blooming (less frost damage), and reliable performance in zones 4—8, per Penn State Extension.
Why do my saucer magnolia flowers turn brown every spring? Late frost damage is the most common cause, per Missouri Botanical Garden. Saucer magnolia blooms in late March to early April in zone 6 — right in the window for late frosts. Consider replacing with 'Brozzonii' (later-blooming soulangeana) or a 'Little Girl' hybrid.
**Can Magnolia grandiflora survive in zone 6?** 'Bracken's Brown Beauty' and 'Edith Bogue' are the most reliably cold-hardy selections. Per NC State Extension, 'Bracken's Brown Beauty' has performed in zone 5b in protected sites. Success in zone 6 requires a sheltered location (south-facing wall, protected from northwest winds) and well-drained soil.
Do magnolias require full sun? Most deciduous magnolias perform best in full sun (6+ hours), per Missouri Botanical Garden. Magnolia virginiana is the exception — it tolerates partial shade and is the correct choice for light woodland edges or wet, partially shaded sites.
Sources
- NC State Extension — Magnolia genus overview
- Missouri Botanical Garden — Magnolia stellata
- Missouri Botanical Garden — Magnolia × soulangeana
- Missouri Botanical Garden — Magnolia virginiana
- Penn State Extension — Magnolias
- University of Minnesota Extension — Magnolias
- UF IFAS Extension — Magnolia grandiflora
- NC State Extension — Magnolia grandiflora 'Bracken's Brown Beauty'
- NC State Extension — Magnolia grandiflora 'Kay Parris'
- Clemson HGIC — Magnolia