Magnolia

Magnolia x soulangeana

treeMagnoliaceae

Magnolia (Magnolia x soulangeana) is a tree from the Magnoliaceae family that grows up to 8 meters tall. This plant thrives in full sun to partial shade and requires low maintenance. Blooms in early spring and spring with pink, white flowers and attracts bees.

Hoogte

400–800 cm

Breedte

400–700 cm

Zonligging

full sun, partial shade

Waterbehoefte

moderate

Grondsoort

loam, peat soil

Onderhoud

low maintenance

Bloeitijd

early spring, spring

Bloemkleuren

pink, white

Ecologische waarde

Trekt bijen aan

Verzorgingskalender

Taak	Jan	Feb	Mrt	Apr	Mei	Jun	Jul	Aug	Sep	Okt	Nov	Dec
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Care tips

Planting

Magnolia × soulangeana thrives in full sun or partial shade, though flowering is most abundant with at least six hours of direct sunlight daily. Choose a sheltered spot away from strong winds and late-spring frosts, which can damage the early blooms. Avoid east-facing positions where morning sun can thaw frozen buds too quickly after a cold night. This magnolia prefers moisture-retentive, slightly acidic to neutral soil rich in organic matter. Loam or peat-enriched soil is ideal; avoid shallow chalk or heavy clay that stays waterlogged. Before planting, dig a hole twice the width of the root ball but no deeper—magnolias dislike being planted too low. Mix the excavated soil with well-rotted compost or ericaceous compost to improve structure and acidity. Plant between March and April or in September and October when the soil is workable and temperatures are mild. Container-grown specimens can go in at any time during these windows, but avoid frozen or waterlogged ground. Position the magnolia so the top of the root ball sits level with the surrounding soil surface; planting too deep can lead to stem rot. Space trees at least 500 cm apart to allow for their mature spread of 4 to 7 metres. After planting, water thoroughly to settle the soil and eliminate air pockets. Apply a 7–10 cm layer of organic mulch such as composted bark or leaf mould around the base, keeping it clear of the trunk itself. Stake young trees loosely if the site is exposed, using a short stake and flexible tie, and water regularly through the first growing season until the roots establish.

Pruning

Magnolia × soulangeana requires very little pruning and resents heavy cutting, which can spoil its natural shape and reduce flowering. The species flowers on old wood formed the previous year, so any pruning should be done immediately after flowering finishes—ideally in June or July—to avoid removing next spring's flower buds. Focus on removing only dead, damaged, or diseased wood. Cut back to healthy tissue just above a bud or branch junction using clean, sharp secateurs or a pruning saw for thicker branches. If two branches are crossing or rubbing, remove the weaker or more awkwardly placed one to improve air circulation and prevent bark damage. Magnolias naturally develop an attractive, rounded or spreading crown and rarely need shaping. Resist the temptation to prune for size control; if your magnolia is outgrowing its space, the problem is usually poor siting rather than a need for regular cutting back. Hard pruning into old wood often results in ugly stubs, slow healing, and increased risk of disease, particularly coral spot fungus and canker. Young trees benefit from formative pruning in their first few years: remove any competing leaders to encourage a single main stem, and take out weak or inward-growing shoots. Always make clean cuts and avoid tearing the bark. Magnolia wood is relatively soft and wounds heal slowly, so use a sharp blade and prune only when necessary. If you must remove a larger branch, do so in stages to avoid ripping the bark, and avoid pruning in wet weather when fungal spores spread more easily.

Maintenance

Water your magnolia regularly during its first two or three years, especially in dry spells between April and September. Once established, magnolias have moderate water needs but appreciate consistent moisture during prolonged dry periods. Water deeply rather than little and often, soaking the root zone thoroughly every week or two in summer if rainfall is scarce. Reduce watering in autumn and winter when the tree is dormant. Feed in April and May with a balanced slow-release fertiliser or a specialist ericaceous feed if your soil is neutral to slightly alkaline. Scatter the fertiliser evenly over the root zone—roughly in line with the canopy's outer edge—and water in well. Avoid high-nitrogen feeds, which promote soft growth at the expense of flowers. A spring mulch of well-rotted compost or leaf mould also provides gentle, ongoing nutrition. Refresh the mulch layer each spring, maintaining a depth of 7–10 cm around the base to conserve moisture, suppress weeds, and insulate roots. Keep mulch a few centimetres clear of the trunk to prevent rot. Magnolia × soulangeana is fully hardy across zones 5a–9b and needs no winter protection once established. Young trees may benefit from fleece over the crown during severe frosts in their first spring to protect emerging buds. Common problems include scale insects, which appear as small brown lumps on stems and can be treated with horticultural soap or a soft brush in early summer. Honey fungus is a serious but rare issue; affected trees show dieback and white fungal growth under the bark. Coral spot can enter through pruning wounds, so always prune cleanly and in dry conditions. Magnolias are generally pest- and disease-resistant if grown in suitable conditions.