Key features
Final size12m x 8m in 20 years
PositionFull sun to part shade
SoilPrefers moist yet well-draining soil
Description
Magnolia kobus, commonly known as Northern Japanese magnolia, is an attractive deciduous tree with a broadly conical habit, reaching an approximate height of 12m with a spread of 8m. It features interesting bark, usually silvery or brownish-grey, and displays mid-green leaves up to 15cm in length. In autumn, its leaves turn a yellowish-brown before falling for the winter. In spring, this magnolia produces an abundance of fragrant, white star-shaped flowers, creating a stunning blossom display that stands out in any garden. This is followed by pink fruits in the summer.
Magnolia kobus thrives in moist but well-drained soils and prefers a position in full sun to partial shade. It is a hardy and relatively low-maintenance tree, making it an excellent choice for larger gardens, parks, or as a striking focal point in a landscape. With its beautiful flowers and attractive foliage, Magnolia kobus adds elegance and charm to any garden setting.
AKA: Northern Japanese magnolia, Magnolia kobus var. borealis, Magnolia praecocissima
Planting Steps
1Preparation
- Pot-grown plants can be planted at any time of year, whereas bare roots need to be planted between November and March.
- Clear weeds and grass within a metre of the planting hole.
- Dig a hole as deep as the root mass and twice as wide.
- To help your plant establish more effectively, sprinkle Rootgrow in the hole.
2Planting
- Gently loosen the roots and place into the planting hole.
- Ensure the top of the plant’s compost is flush with the level of the surrounding soil and the graft union or collar of the tree is above ground level.
- Mix 50% of the original soil with 50% compost.
- Fill in the hole, firming the soil gently.
3Last Steps
- Water generously around the base of the plant.
- If you are planting either a single stem tree or mature standard tree, we recommend adding a staking kit and rabbit guard.
Aftercare Advice
Magnolia require a good watering regime for a couple of years whilst they establish. Water well and regularly through spring and summer, increasing in hot or dry weather. If planting in autumn, you may only need to water a little. It is advisable to keep the area free of competing weeds and grass during this period.
Magnolia trees and shrubs can be pruned into shape by removing branches that are growing in an awkward position, as well as any that are damaged. They should not be heavily pruned as this can send them into shock. If pruning to limit the overall size, stagger your pruning over a few years to alleviate the stress on your tree. Pruning for Magnolia should be carried out in mid-summer to early autumn. Avoid pruning in late winter to early spring.
For more detailed advice and video guides, please visit our Help & Advice section.
