Key features
Final size6 x 4 metres in 20 years
FoliageGreen leaves turn fiery colours in autumn (deciduous)
FlowersCorymbs of flowers in spring
FruitOrnamental orange-red berries in autumn/winter
PositionFull sun to part shade, including exposed sites
SoilPrefers moist yet well-draining soil
Description
Sorbus commixta is arguably one of the very best Mountain Ash trees for autumn colour. The mid-green, pinnate foliage turns vivid red and orange in the autumn and orange-red berries are produced in large clusters. These berries are popular with birds throughout the winter and provide an additional element of seasonal interest. Corymbs of fluffy white flowers appear in May-June and are very popular with bees and other pollinating insects.
This small erect Japanese Rowan tree will grow to 6 x 4 metres in 20 years so is ideal for limited spaces. It is very tough Rowan tree that tolerates an exposed position and suits full or part sun. It will grow in most soils, although it is happiest in a slightly acidic soil.
AKA Japanese Rowan, Mountain ash, Sorbus commixta ‘Nanakamado’
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
Rowan 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.
Rowan trees require a strong framework to support their many berries, so it is good to encourage this by raising the crown in summer. Simply prune the lower branches and any crossing, damaged or diseased branches within the crown. Hard pruning can be carried out in the dormant season, from autumn to winter.
For more detailed advice and video guides, please visit our Help & Advice section.
