Tree · Magnoliaceae
Jane Magnolia
Magnolia 'Jane'
A small tree that throws open tulip-shaped purple-pink flowers late enough to sail past the spring frost.
Full sun
Every 5–10 days
USDA 4–8
10–15 ft · 3–4.6 m
Overview
Jane magnolia brings the spring show that keen growers wait all winter for. She stands among the eight Little Girl hybrids bred at the National Arboretum, a cross made on purpose to flower late, and she grows as a compact tree or large shrub that reaches 10 to 15 feet (3 to 4.5 m) with a rounded shape built for a small yard. The tulip-shaped flowers swing open purple-pink outside and pale within, beating the leaves to the punch.
The thing that really sets Jane apart is her timing. She flowers in mid-to-late spring, a solid 2 to 4 weeks after the star and saucer magnolias, and that late start is exactly why her blooms so often dodge the frost that flattens earlier kinds. Plenty of trees keep it going with a scattering of extra blooms right into summer.
Best of all, she asks so little once settled. Hand her sun, room to spread, and steady water while she is young, and this slow grower turns into a long-lived, no-drama tree that pays you back with a fresh burst of color every single spring.
Care
The short version: give her full sun to part shade in rich, moist, slightly acidic soil, keep her watered while she establishes, mulch to lock in moisture, and prune only right after she flowers.
Light
Jane magnolia puts on her best show in full sun, though she takes partial shade or partial sun in stride. The more sun she catches, the heavier she blooms, so hand her an open spot whenever you can swing it.
Water
Keep the soil evenly moist with regular watering, every 5 to 10 days, and lean wetter while the tree is digging in or riding out a dry spell. A ring of mulch traps that moisture where the roots want it. Once she settles, she shrugs off moderate drought.
Soil
Set her in rich, well-drained loam that runs acidic to neutral, ideally a pH of 5.5 to 6.5. She takes clay better than most trees, so heavy ground won't stop her as long as it drains.
Temperature
This tree is tough as nails, riding out deep cold near -29°F (-34°C) and summer heat up to 95°F (35°C). That grit is exactly what carries her through USDA zones 4 to 8.
Humidity
Plain outdoor humidity suits her fine, so skip the readings. Air movement counts for more, since still, damp air is what ushers powdery mildew onto the leaves.
Feeding
Feed her once in early spring with a balanced or acid-forming fertilizer and call it done. Load on the nitrogen and you just roll out the welcome mat for scale and soft growth.
Pruning
Prune right after she flowers, because next year's buds set on this year's growth and a late cut whisks the blooms away with it. Past clearing dead or crossing branches, she barely needs the shears.
Repotting
This is a landscape tree that's rarely potted up, so repotting hardly ever lands on the list. If one does sit in a container, slowed growth, water blasting straight through, or roots circling the sides say it is time to size up.
Size & spacing
Look for a mature height of 10 to 15 feet (3 to 4.5 m) and a spread of 8 to 12 feet (2.4 to 3.7 m). Hand her that much open room from day one so the crown can stretch out and fill in without a fight.
When to plant
Jane magnolia dances to her own beat, and it works out beautifully. Plant her in spring or early fall while the weather stays mild, then wait for the payoff in mid-to-late spring, when she flowers later than most magnolias and usually breezes past the frost.
Northern hemisphere
Southern hemisphere
Typical months for a temperate climate: start earlier in warm zones, later where spring frosts linger.
- Plant: Spring or early fall
- Harvest: Mid-to-late spring (mid-April to early May), about 2-4 weeks later than star and saucer magnolias; often reblooms sporadically in summer
Hardiness
USDA hardiness zones: 4–8
Temperature: down to -34°C
Troubleshooting
Jane magnolia powers through most seasons in fine health, so trouble is the exception, not the rule. When something does turn up, it tends to flag on the leaves or twigs first. Match what you spot to the notes below and jump on it before it spreads.
Waxy bumps on the twigs with sticky leaves and a black film below
Spot raised waxy bumps on the twigs and you have found magnolia scale, a sap-sucker that rides under a waxy shell. It pumps out sticky honeydew as it feeds, and that sugar quickly grows a black coat of sooty mold on the leaves right below. Snip out the worst twigs, go after the summer crawlers or dormant scale with horticultural oil, and let hungry predators finish the job.
Fix:
- Prune out and destroy heavily infested twigs
- Apply horticultural oil during dormancy or treat crawlers in summer
- Encourage natural predators
Dark blotches on the leaves with twigs dying back
Dark leaf spots teamed up with sunken lesions on the wood flag leaf spot or canker fungi. The moment a branch starts to die back, cut it out and get rid of the wood before it drags the tree down. Rake up the fallen diseased leaves, keep the tree watered and mulched, and it will power right through the rest.
Fix:
- Prune out and destroy cankered or dead wood
- Rake and remove fallen diseased leaves
- Maintain plant vigor with proper watering and mulching
A white, powdery dust across the leaves
Catch a chalky white film on the leaves and you are looking at powdery mildew, a fungus that moves in when the air turns humid and stalls. Good news: a healthy tree brushes it off, so count it a cosmetic blip rather than a real threat. Thin any crowded growth to get the air flowing, sweep up fallen leaves in autumn, and only pull out a labeled fungicide if it really digs in.
Fix:
- Rake and dispose of fallen infected leaves
- Improve air circulation by thinning
- Apply a labeled fungicide if severe
Toxicity
Here is a win for anyone with pets or kids: every part of this tree is safe. The ASPCA lists magnolia as non-toxic to cats, dogs, and horses, with no toxic compounds in the leaves, bark, or flowers. A curious nibble might bring a passing stomach upset, like any plant can, but nothing here will poison a soul.
Safe for
People · Cats · Dogs · Horses · Rabbits · Livestock · Birds
Cats None
Cats can prowl around a Jane magnolia to their heart's content, since the ASPCA rates it non-toxic.
Dogs None
A dog that snags a dropped leaf or flower won't be poisoned, though gulping a big mouthful of any plant can spark a quick stomach upset.
Horses None
Horses get the all-clear too, as magnolia carries no toxic principles that would bother them.
Rabbits Safe
Rabbits run no toxic risk from the leaves or the blooms.
Livestock Safe
Grazing animals like goats and cattle can browse near the tree safely.
Birds Safe
Birds that perch in the branches or grab the fruit come away just fine.
People Safe
It stands safe around children, with nothing poisonous in the leaves, bark, or flowers.
No special handling precautions are required for toxicity.
Varieties
Jane is one of eight Little Girl hybrids, and her sisters all run the same late-blooming, frost-dodging playbook in a whole range of flower colors. These are the ones you will keep bumping into.
Ann
Ann charges out early among the Little Girl series, flaunting slim, upright reddish-purple flowers ahead of most of the group.
Betty
Betty is a Little Girl hybrid whose big blooms fling open to flash purple-red outsides and clean white insides.
Susan
Susan packs the Little Girl group with fragrant fuchsia-red flowers, each petal carrying a lively twist.
Randy
Randy shoots up more upright than its siblings, holding narrow purple-pink flowers tight to the stem.
Judy
Judy is one of the eight National Arboretum Little Girl hybrids, and this one bursts out in deep red-purple.
Pinkie
Pinkie is the Little Girl hybrid that saves the softer pink flowers for a later show than her sisters.
Ricki
Ricki spreads wide as a Little Girl hybrid and blazes into deep purple-red bloom.
How to propagate
Since Jane is a named hybrid, she only comes true when you clone her, and that is half the fun. Three methods get you there, each suited to a different level of patience and skill.
Stem cuttingsModerate
Early to mid summer using softwood to semi-hardwood growth · Several weeks to root; one or more seasons to establish
Grab softwood to semi-hardwood cuttings in early to mid summer, because a named hybrid like Jane stays true only when you clone it. The cuttings need several weeks to root and a season or more to dig in, so it rewards a little patience. Seed won't copy the parent, which makes cuttings the go-to move for a home gardener.
GraftingDemanding
Late winter to early spring onto compatible magnolia rootstock · One to several seasons
Nurseries graft Jane onto a compatible magnolia rootstock in late winter or early spring to nail it true to type. It is demanding work that runs one to several seasons to establish, which keeps it mostly a commercial play.
LayeringModerate
Spring · One or more seasons to root before separation
In spring, pin a low branch to the soil and let it root while it hangs on to the parent. Give it a season or more to root before you cut it loose, and you walk away with an exact clone of the tree you started with.
Myths
Magnolias bloom too early and always lose their flowers to spring frost.
Not Jane. She and the rest of the Little Girl series open 2 to 4 weeks later than the star and saucer magnolias, and that head start usually sails the flowers clear of the worst spring frosts. Better still, the tree often fires off a few more blooms in summer to keep the season going.
Magnolia flowers and foliage are poisonous to dogs and cats.
Great news for pet owners: the ASPCA lists magnolia as non-toxic to dogs, cats, and horses, with zero toxic principles in any part of the plant. Let a curious pet sniff or mouth a fallen bloom with total confidence.