Saucer magnolia

Plant Profile & Key Characteristics

Overview: Deciduous shrub to small tree reaching 3-6 m, grown as a spring-flowering ornamental. Bears large pink, white or purple cup-shaped flowers on bare branches before the leaves.

Quick Specifications

Specification	Attribute
Plant Type / Life Cycle	Perennial (deciduous shrub/small tree)
Foliage Type	Deciduous
Mature Size	3-6 m (10-20 ft)
Growth Rate	Moderate
Root System	Shallow, fleshy rope-like roots
Toxicity	Non-toxic
Hardiness	USDA zones 4-9

Growth Form & Structure

• Height & Spread: 3-6 m; can be container-grown while young.
• Growth Habit & Form: Multi-stemmed, spreading deciduous shrub or small tree.
• Lifespan & Maturity: Long-lived; moderate to reach full size.

Anatomy & Physical Features

• Leaves & Foliage: Green, oval leaves emerging after flowering.
• Flower Characteristics: Large, cup-shaped flowers in pink, white or purple, opening on bare branches in spring.

Primary Uses & Landscape Value

• Functional & Ornamental Roles: Spring-flowering specimen and ornamental shrub or small tree.

Care Guide: Planting, Soil & Watering

Overview: Saucer magnolia (Magnolia soulangeana) is a moderate-growing deciduous shrub or small tree (zones 4–9) that flowers best in full sun and needs winter cold to bloom. It prefers a rich, moist, well-drained soil and steady moderate watering.

Quick Care Requirements

Requirement	Ideal Condition
Planting Season	Late winter to early spring
Growth Rate	Moderate
Soil Type	Rich, moist, well-drained
Water Need	Moderate – keep evenly moist

Planting & Establishment

• Best Planting Season: In late winter to early spring, just before growth resumes.
• How to Plant:
  • Hole Preparation: Dig a hole about the depth of the root ball and two to three times as wide, loosening the sides for the shallow, fleshy roots.
  • Soil Amendments: Work compost or leaf mould into the backfill to build a rich, moisture-retentive yet free-draining soil.
  • Planting Depth: Set the root collar level with the soil surface; avoid deep planting, which magnolias resent, and mulch afterwards.
• Growth Speed & Expectations: A moderate grower that develops into a spreading, multi-stemmed shrub or small tree.

Soil, Watering & Drainage Care

• Soil Mix & Drainage Needs: A humus-rich, moisture-retentive but free-draining soil suits it best; mulch to keep the roots cool. It can be grown in a large container with a rich, free-draining mix and drainage holes.
• Watering Schedule & Technique:
  • Young / Newly Planted: Keep the soil consistently moist while the plant establishes, watering whenever the surface begins to dry.
  • Established: Water deeply when the top few centimetres dry, keeping the soil evenly moist but never waterlogged.
  • Seasonal Adjustments: Cut back in winter and water more often during hot, dry spells.

Climate, Light & Hardiness

Saucer magnolia is a cold-hardy deciduous flowering tree for temperate, subtropical and Mediterranean climates, opening its large cup-shaped blooms in late winter to early spring before the leaves. It flowers best in full sun and, with the site rating it across hardiness zones 4–9, its main climate vulnerability is not winter cold but late-spring frost catching the early flowers.

Quick Climate Specifications

Climate Zones	Temperate, subtropical, Mediterranean
USDA Hardiness Zones	Approximately 4–9 (site data)
Optimal Temp Range	Mild to warm, roughly 15–27°C (59–81°F) in growth
Cold Damage Begins	Open flowers and buds are browned by spring frost
Frost Tolerance	Wood: high; flowers: low
Light Conditions	Full sun

Sunlight & Light Exposure

Optimal Light Setup

Full sun gives the heaviest bloom and a sturdy, well-shaped crown. Light shade is tolerated but reduces flowering.

Best Exposure / Orientation

Avoid warm, early-sun positions (such as an exposed east or south face) that coax the buds open during mid-winter warm spells – a slightly cooler, sheltered aspect delays flowering until frost risk eases and protects the display.

Temperature Extremes & Hardiness

USDA Hardiness & Regional Limits

Site data lists zones 4–9; the lower edge of zone 4 corresponds to winter lows around −34 to −29°C (−30 to −20°F). The dormant tree is very cold-hardy – it is the flowers, not the wood, that are at risk.

Frost Sensitivity

The early, showy flowers are the weak point: a late frost after the buds swell or open will brown and collapse the blooms in a single night, even though the tree itself is unharmed. In frost-prone areas, siting and later-flowering cultivars reduce the risk.

Cold Damage & Winter Protection

Established trees need no winter protection within their zone; young trees appreciate shelter while establishing. A cold, dormant winter is welcome and helps the tree flower well.

Extreme Heat Tolerance

Moderate. It grows in the warmer, subtropical end of its range but prefers cooler summers; in hot climates give it rich, moist soil and some afternoon relief.

Wind, Humidity & Microclimate

Wind Tolerance

Moderate. Shelter from strong wind protects the brittle, fleshy petals and keeps the delicate spring display intact.

Microclimate Recommendations

A sheltered spot that warms up slowly in spring is ideal – it steadies bloom timing and shields the flowers from both frost and wind.

Growing in Pots, Balconies & Indoors

Saucer magnolia is a beautiful spring-flowering deciduous small tree – the grower does not class it as a houseplant, but it can be grown in a large container while young. Reaching 3-6 m in time, it is best thought of as a big-growing patio tree for a tub in its early years before it wants a permanent spot.

Quick Details

• Container Size: Large – a young plant needs a 40-90 L (10-24 gal) tub, and it will eventually outgrow even that
• Indoor Suitability: Not a houseplant – a hardy deciduous tree that needs an outdoor season and winter chill
• Best Spot: Full sun for best flowering; shelter the early blooms from cold morning sun after frost
• Soil & Drainage: Rich, moisture-retentive but well-drained mix; it likes cool, non-alkaline soil
• Watering in Pots: Average and steady – keep the tub evenly moist, especially through bud and leaf growth

Indoors & On the Windowsill

• Not a houseplant: The grower marks it unsuitable indoors – it needs cold winters to flower and drops its leaves in dormancy.
• Overwintering: Hardy to zone 4, it simply rests outdoors over winter; protect the tub from freezing solid in very cold areas rather than bringing it into a warm room.

On a Balcony or Patio

• A patio tree while young: In a big tub it makes a fine spring-flowering feature for a few years; site it where the early blooms are sheltered from frost and cold morning sun.
• Weight & wind: A large tub is heavy and top-heavy in leaf – stand it on a strong point and shelter it from strong wind.

Choosing the Pot, Soil & Long-Term Care

• Pot & drainage: A large, stable pot with strong drainage holes; skip a standing water saucer to avoid root rot. Terracotta breathes and dries faster, glazed or plastic holds moisture longer.
• Potting mix: A rich, slightly acid, moisture-retentive but free-draining mix.
• Feeding: Feed through the growing season; potted nutrients leach with watering, so feed regularly but lightly.
• Repotting & planting out: Refresh the mix and pot up every couple of years while young; as it grows into a small tree, plan to plant it into open ground for the long term.

Fertilizing & Feeding

A moderate feeder that blooms best on balanced feeding with adequate nitrogen; avoid high-phosphorus bloom boosters, and stop feeding by late summer so no frost-tender growth is pushed.

Quick Fertilizing Specs

Feeding Level	Moderate
Main Nutrient Priority	Balanced feeding with adequate nitrogen, not high phosphorus
Best Feeding Period	Early in the growing season through spring
Organic Options	Compost and organic mulch over the root zone
Micronutrients	Watch for iron on alkaline soils
Soil pH	Moist, well-drained, slightly acidic soil
Reduce/Stop Feeding	Stop feeding by late summer to avoid frost-tender growth

Feeding by Growth Stage

Spring growth

Support a healthy flush of new leaves and shoots as growth resumes.

Nutrient direction	A balanced complete fertilizer as new growth begins; adequate nitrogen, not high phosphorus.
Timing	Early in the growing season as buds break and shoots extend.
Frequency	A feeding early in the growing season supports the season’s growth.
Fertilizer types	A balanced complete fertilizer, Slow-release granular fertilizer, Compost or organic matter
Precautions	Avoid high-phosphorus “bloom booster” products; balanced feeding with adequate nitrogen drives healthy bloom.

Flowering

Sustain the plant through fragrant flowering without forcing soft growth.

Nutrient direction	Keep balanced feeding rather than switching to a high-phosphorus product for more flowers.
Timing	Around the flowering period.
Frequency	Little extra feeding is needed during bloom itself.
Fertilizer types	A balanced complete fertilizer
Precautions	Extra phosphorus does not increase bloom and can harm soil life; keep feeding balanced.

Dormancy / winter rest

Let the tree rest through the cold season.

Nutrient direction	None – withhold fertilizer while the tree is dormant.
Timing	Late autumn and winter dormancy.
Frequency	No feeding at this stage.
Fertilizer types	No feeding at this stage until growth resumes in spring.
Precautions	Do not fertilize a dormant tree; feeding late can push frost-tender growth.

Nutrient Deficiency Signs & Corrections

Younger leaves yellow between the veins while the veins remain green; severe cases scorch.

Possible causes	Iron uptake limited by high or alkaline soil pH, Waterlogged or compacted soil, Root damage or stress
Appears first on	Youngest leaves
What to check	soil pH, drainage and soil compaction, root condition
Possible correction	Correct soil pH toward slightly acidic and apply a chelated iron product following its label.

Overall pale foliage with weak, slow new growth.

Possible causes	Low soil nitrogen, Leaching in sandy soils, Competition from turf or nearby roots
Appears first on	Older leaves
What to check	soil fertility and feeding history, mulch and organic matter, surrounding competition
Possible correction	Apply a balanced feed with adequate nitrogen and maintain organic mulch.

Leaf margins brown and scorch, or soft late growth is damaged by frost.

Possible causes	Excess fertilizer salts, Feeding too late in the season pushing tender growth, Drought stress
Appears first on	Leaf margins and new shoots
What to check	recent feeding timing and amount, soil moisture, exposure to frost
Possible correction	Lighten feeding, water thoroughly to flush salts, and avoid late-season nitrogen.

Pruning, Training & Seasonal Maintenance

Saucer magnolia is a deciduous shrub to small tree that blooms very early in spring on bare, leafless branches, before the leaves appear. Those large cup-shaped flowers open from fat, furry buds set the previous summer on last year’s wood, so timing is everything: the safe window is immediately after flowering in late spring, and pruning in summer, autumn or winter removes next spring’s flower buds. It needs little pruning, resents heavy cuts and heals slowly, so work is limited to light shaping and removing crossing or damaged stems.

Quick Pruning & Maintenance Specs

Pruning Tolerance	Low – minimal cuts; resents hard pruning, heals slowly
Primary Pruning Window	Immediately AFTER flowering (late spring) – not autumn/winter
Typical Frequency	Rarely – only as needed for shape and health
Main Objective	Light shape; remove crossing/damaged stems; keep flower buds
Young Plant Priority	Choose a single-trunk tree or a multi-stem shrub form
Mature Plant Priority	Thin only crossing or dead stems, just after bloom
Best Tool Type	Bypass secateurs and loppers
Avoid Heavy Pruning During	Midsummer through winter – you would cut off next spring’s buds

Pruning by Plant Age & Size

Newly Established

Remove only damaged growth and decide the form you want; do not hard-prune a young plant that is still building its framework.

Young / Formative

For a single-stem small tree, select one leader, clear the lowest shoots and raise the canopy – all done just after bloom; for a broad shrub, keep several stems and only thin the weakest. Because it is usually grafted or cutting-grown to come true, watch for growth from below any graft union.

Mature / Established

Limit work to removing crossing, rubbing or dead stems immediately after flowering; otherwise leave the naturally rounded shape alone.

Seasonal Pruning Schedule

Post-Flowering (Late Spring) – the main window

Objective: shape with no loss of next year’s bloom. Remove: crossing, rubbing, weak or badly placed stems. Do NOT remove: healthy tips and spurs, which will set flower buds over the coming summer. Expected response: a full summer to form buds for the next spring.

Ongoing Sanitary

Objective: safety and health. Remove: clearly dead or broken stems, which can go at any time. Do NOT: cut healthy bud-bearing wood outside the post-bloom window.

Flowering & Fruiting Wood

Critical here: flowers form on the tips and short spurs of the previous season’s wood, from buds set the summer before, and open precociously on bare branches. Pruning after midsummer – or in the autumn/winter that a generic schedule would suggest – cuts off the very buds that would open next spring. Prune only just after bloom to keep the display.

Structural Pruning & Training

Grow it either as a single-stem small tree (one leader, canopy raised) or as a broad multi-stem shrub; remove crossing, rubbing or weak wood and any reverted growth. Avoid hard thinning – big cuts heal slowly and spoil the naturally rounded outline.

Special Growth to Remove

• Rootstock suckers – on a grafted plant, remove any shoots from below the graft union promptly; they are not the named variety and will overtake it.
• Basal shoots – keep them for a multi-stem shrub, or remove them for a clean-trunked tree.

Container & Small-Space Pruning

It can be grown in a large pot as a compact specimen; keep pruning to light post-bloom shaping, expect slower growth, and do not root-prune to force size – the plant resents disturbance and responds to stress with lost bloom.

Tools

Use bypass secateurs for twigs, loppers for older stems, and a pruning saw only for the occasional larger limb. Never use hedge shears on this open-branched plant.

Tool Hygiene & Disease Risk

Routine – clean, sharp cuts aid the slow healing. Disinfect only when cutting obviously diseased wood.

Cut Placement & Technique

Use thinning cuts back to a branch junction to keep the natural shape; cut just outside the collar and avoid stubs, which die back on magnolias. Remove larger limbs in stages to prevent bark tearing.

Heavy Pruning & Rejuvenation

Poorly tolerated. An old, overgrown saucer magnolia can be reduced only cautiously and slowly; hard cuts provoke a flush of watersprouts and years of lost flowering, so spread any renovation over several seasons and always cut just after bloom.

Post-Pruning Care

Minimal – keep the plant watered after any canopy work, watch large wounds close slowly, and rub out or thin any watersprouts that crowd in after harder cuts.

Common Pruning Mistakes

• Pruning in winter “while dormant” and cutting off all the flower buds – the single most common error, and the one a generic autumn/winter schedule would cause.
• Shearing it into a formal shape it is not suited to.
• Leaving stubs, which die back.
• Ignoring rootstock suckers until they overtake the grafted variety.

When NOT to Prune

From midsummer through winter, when you would remove next spring’s flower buds; also avoid heavy cuts on a stressed or newly transplanted plant.

Recommended Tools (by task)

• bypass_secateurs – twiggy shaping and sucker removal.
• loppers – older crossing or dead stems.
• pruning_saw – the occasional larger limb, cut cleanly at the collar in stages.

Pruning Troubleshooting

Problem	Possible Cause	What to Check	Corrective Action
No flowers next spring	Pruned outside the post-bloom window	When last year’s pruning was done	Prune only just after flowering; wait a year for buds to reset
Flush of upright watersprouts	Hard cuts provoking vigorous regrowth	Severity of recent cuts	Thin sprouts out; renovate gradually over seasons
Dieback at cut ends	Stubs left, or wounds slow to heal	Whether cuts were to a junction/collar	Recut to a healthy junction outside the collar; avoid stubs
Off-type shoots from the base	Rootstock suckers below the graft	Whether growth arises below the union	Remove suckers promptly at their origin

Propagation Guide

Saucer magnolia is a hybrid (Magnolia × soulangeana), so vegetative propagation is needed to reproduce a plant true to its parent — seedlings are variable. The most reliable home methods are softwood/semi-hardwood cuttings and simple layering, both moderately achievable, while grafting is used in the nursery trade.

Quick Propagation Specs

Best Propagation Method	Softwood/semi-hardwood cuttings or layering
Alternative Methods	Grafting; seed (variable, breeding/rootstock only)
Propagation Difficulty	Moderate
Seed True-to-Type	No — hybrid offspring vary
Vegetative True-to-Type	Yes — required to keep the cultivar
Best Propagation Season	Cuttings in early to mid summer; layer in spring
Cutting Rooting Time	Several weeks to a few months

Stem Cuttings

Cutting Type & Timing

Softwood to semi-hardwood tip cuttings taken in early to mid summer while growth is still flexible.

Cutting Preparation & Rooting Hormone

Wound the base lightly and use a rooting hormone; magnolias root unevenly, so hormone is strongly recommended.

Rooting Setup & Time

Root under mist or high humidity with warmth; rooting takes several weeks to a few months, and newly rooted cuttings are best overwintered before potting on.

Air & Ground Layering

Simple or ground layering works well: peg a low, flexible branch into the soil (or air-layer a higher branch), keep the medium moist, and allow it to root over a full growing season before separating.

Grafting & Budding

Nurseries graft cultivars onto compatible magnolia rootstock to reproduce them true and to build up stock quickly; this is a specialist step rather than a home method.

Growing from Seed

Seed is used only for breeding or to raise rootstock, not to reproduce the plant, because hybrid seedlings vary. If attempted, clean the fleshy coat, keep the seed moist (do not dry), and give it a period of moist cold stratification before sowing.

Bloom & Edible Flower Guide

Quick Details

• Bloom Season: Early spring
• Time to First Bloom: Nursery-grown plants usually begin flowering within a few years
• Flower Appearance: Large, cup- to saucer-shaped flowers in pink, white or purple
• Edibility: The petals are edible – traditionally pickled or candied, with a gingery flavour; use only freshly opened, unsprayed flowers

Detailed Blooming Overview

The saucer magnolia is a deciduous magnolia that flowers on bare branches in early spring, before the leaves appear, for a spectacular display. Like other magnolias, its cup-shaped blooms are mainly beetle-pollinated. Because it flowers so early, a late frost can brown the open blooms.

Flower Characteristics

• Large, cup- to saucer-shaped flowers.
• Colours: pink, white or purple.
• Appear before the foliage in early spring.

Bloom Care & Thinning

• Managing the bloom: Little pruning is needed; where possible, shelter the early blooms from late frost.
• Pollination: Mainly beetle-pollinated.
• Edible use: Use only just-opened, unsprayed petals, and sparingly.

Fruit & Uses

Saucer magnolia is grown as an ornamental flowering tree, not as a food crop. Its only edible part is the fleshy flower petal, which has a marginal, niche use pickled or lightly cooked and eaten in small amounts.

Quick Edible Specs

Edible Parts	Flower petals only (marginal use)
Main Use(s)	Occasional culinary flavouring – petals pickled or lightly cooked; otherwise purely ornamental
Eaten Raw or Cooked	Usually pickled or cooked; used sparingly
Preparation Required	Use young petals, wash well, pickle or cook; strong flavour so use in small amounts
Harvest Season	Spring, while the flowers are fresh and newly open
Safety/Toxicity Caveat	Treat petals as a garnish/flavouring, not a food staple; be sure of correct identification

Flowers & Flower Buds

The flowers are large and cup-shaped in pink, white or purple, opening in spring. The thick, fleshy young petals are the part with a culinary tradition – in some cuisines they are pickled or battered and lightly cooked. The flavour is distinctive and slightly gingery, so only small amounts are used. Pick petals from freshly opened spring flowers.

Preparation, Uses & Safety

This is a niche culinary use rather than a mainstream food. Take fresh young petals, wash them, and pickle or lightly cook them, using sparingly. No other part of the tree is used as food, and no medicinal or health claims are made.

Pests, Diseases & Troubleshooting

Overview: Magnolias are generally robust ornamental trees whose most conspicuous pest is magnolia scale, backed by other scales, mites and thrips, while their diseases are mostly cosmetic leaf spots and mildews plus occasional canker and Verticillium wilt. The commonest real problems are abiotic – chlorosis on alkaline soil, leaf scorch and, for early-blooming types, frost damage to the flowers. Culture and sanitation carry the day.

Quick Troubleshooting Overview

Issue / Pest	Main Symptom	Primary Solution
Magnolia scale	Large shiny bumps on twigs; heavy honeydew, sooty mould	Prune out; dormant/horticultural oil at crawler stage
Scale (soft/tuliptree)	Brown scales, yellowing, sticky leaves	Scrape/prune; horticultural oil
Spider mites	Stippling and bronzing in hot dry weather	Hose foliage; horticultural oil
Leaf spots / algal spot	Brown or grey-green spots on leaves	Rake leaves; airflow; copper if severe
Chlorosis	Interveinal yellowing on alkaline soil	Acidify soil; chelated iron; mulch
Frost/scorch damage	Browned flowers or scorched leaf margins	Shelter siting; even watering; delay pruning

Common Pests & Management

• Magnolia scale (Neolecanium cornuparvum):
  • Symptoms: One of the largest soft scales – smooth, shiny, pinkish-brown to grey bumps up to a centimetre across encrust twigs and branches, drenching the plant in honeydew and black sooty mould and causing branch dieback.
  • Prevention & Control: Prune out and destroy heavily infested twigs, apply horticultural or dormant oil to smother the overwintering nymphs and target the crawler stage in the warm season, and conserve parasitoid wasps and lady beetles; spray oils in the evening to protect pollinators.
• Tuliptree / soft scale (Toumeyella liriodendri / Coccus spp.):
  • Symptoms: Brown, rounded scales on twigs and leaf undersides suck sap, yellowing leaves and coating foliage with honeydew and sooty mould.
  • Prevention & Control: Scrape off accessible scale, prune out infested wood, and treat crawlers with horticultural oil; keep trees vigorous and unstressed.
• Two-spotted / spider mites (Tetranychus urticae / Oligonychus spp.):
  • Symptoms: Fine pale stippling, bronzing and faint webbing on leaves in hot, dry, dusty conditions, causing dullness and early leaf drop.
  • Prevention & Control: Hose foliage to remove dust and mites, keep the tree watered during drought, and use horticultural oil for persistent colonies; conserve predatory mites.
• Thrips (Thrips / Frankliniella spp.):
  • Symptoms: Silvery flecking and distortion of young leaves and petals with tiny black frass, sometimes browning the flowers.
  • Prevention & Control: Encourage predators, hose foliage, and use insecticidal soap or neem only if damage is heavy; keep plants unstressed.

Diseases & Fungal Issues

• Bacterial leaf spot (Pseudomonas syringae):
  • Symptoms: Angular water-soaked then brown-black spots on leaves, sometimes with yellow halos, in cool wet conditions; mostly cosmetic.
  • Treatment & Management: Rake up and destroy fallen leaves, avoid overhead watering, improve airflow, and use a copper spray only where it recurs badly.
• Algal leaf spot (Cephaleuros virescens):
  • Symptoms: Circular grey-green to orange velvety patches on leaves of evergreen magnolias in warm, humid, still conditions.
  • Treatment & Management: Improve air circulation by pruning, reduce leaf wetness, keep trees vigorous, and apply a copper product for severe infections.
• Powdery mildew (Microsphaera spp.):
  • Symptoms: White powdery patches on leaves in warm, humid, crowded conditions, causing yellowing and distortion.
  • Treatment & Management: Prune for airflow, water at the base, remove affected leaves, and use sulfur or potassium-bicarbonate if it spreads.
• Verticillium wilt (Verticillium spp.):
  • Symptoms: Sudden wilting, yellowing and dieback of one side or scattered branches, with dark staining in the wood – a soil-borne vascular disease.
  • Treatment & Management: There is no cure: prune out dead wood, keep the tree vigorous with water and mulch, avoid planting magnolias where the disease is known, and remove severely affected trees.
• Canker & dieback (Nectria / Botryosphaeria):
  • Symptoms: Sunken, cracked cankers on branches with dieback, usually entering through wounds or cold-damaged bark.
  • Treatment & Management: Prune out cankered wood well below the lesion with sterilised tools in dry weather, avoid wounding, and keep trees unstressed.

Growing Difficulties & Abiotic Problems

• Lime-induced chlorosis:
  • Cause & Symptoms: Interveinal yellowing of leaves on alkaline soil, as magnolias prefer neutral to acid ground and cannot take up iron at high pH.
  • Correction Strategy: Test and acidify the soil with organic matter and elemental sulfur, mulch with leaf-mould, and correct quickly with chelated iron; site in suitable acid-to-neutral soil long term.
• Leaf scorch & sunburn:
  • Cause & Symptoms: Browned leaf margins and bleached patches from drought, hot wind or intense reflected sun, worst on newly planted trees.
  • Correction Strategy: Water deeply and evenly especially while establishing, mulch to conserve moisture, and shelter from hot drying wind; avoid planting against hot reflective walls.
• Frost damage to early blooms:
  • Cause & Symptoms: Browned, mushy, collapsed flowers when this early deciduous magnolia blooms before the last frosts and buds are caught by cold.
  • Correction Strategy: Site out of frost pockets and away from early-morning sun that thaws frosted buds too fast, choose a sheltered spot or later-blooming cultivar, and accept that some seasons will lose blooms to frost.

What Helps – Products & Tools

Sanitation and oil are the mainstays: prune out and oil-treat magnolia scale at the crawler stage, hose off mites, and rake leaves to limit leaf spots. Chelated iron corrects chlorosis on limey soil, and copper or sulfur handle stubborn leaf spot or mildew. Careful siting prevents most scorch and frost damage.