20% off
Wisteria floribunda 'Kokuryū'
black Japanese wisteria (syn. Royal Purple / Kokuryu / Black Dragon)
It's not unusual for the pendent trusses of lilac flowers to reach up to 50cm in length, so they can...
5 litre pot | 1.5m cane | grafted
shipped within 2 weeks
1
Delivery options
Plant description
It's not unusual for the pendent trusses of lilac flowers to reach up to 50cm in length, so they can really put on an amazing display in the late spring or early summer garden. Often starting to appear on quite young plants, the flowers of this award-winning wisteria have a light perfume, so if it's possible, try to plant it near a seating area or entrance.
This plant has been vegetatively propagated, so will flower earlier than those grown from seed.
This plant has been vegetatively propagated, so will flower earlier than those grown from seed.
Eventual height & spread
Flowering period
- Jan
- Feb
- Mar
- Apr
- May
- Jun
- Jul
- Aug
- Sep
- Oct
- Nov
- Dec
Plant features
Position
Full sun
Rate of growth
Fast-growing
Soil
Moderately fertile, moist, well-drained soil
Hardiness
Fully hardy
How to care for Wisteria floribunda Kokuryū:
To avoid dry conditions, and to ensure good soil contact around the rootball, we advise planting climbers at least 30cm (12in), and preferably 45-60cm (18-24in) away from the base of a wall or fence. An even larger distance should be maintained when planting climbers beside an existing tree or shrub.
To promote flowering, prune the twining stems twice a year in mid-summer and in mid-winter. For wall-training, install a network of stout horizontal wires, attached to the wall at approximately 30cm (12in) intervals.
When planting, add some soil conditioner (well-rotted compost) to the planting hole and some mycorrhizal fungi to aid root establishment. After planting, prune the leading shoot of your wisteria back to approximately 90cm (3ft) above ground level and remove any side branches to encourage a new leader to form. In the summer of the first growing season, tie the leader in vertically and choose two new lateral shoots on either side of this leader.
Tie these onto the wires at a 45-degree angle. Prune smaller shoots on these lateral branches to two or three buds. In the first winter, prune the leader to a bud approximately 75cm (2.5ft) above the highest lateral branch. Gently untie the lateral branches, prune them (approx. a third), then re-tie onto a wire so they are nearly horizontal.
In subsequent summers, tie in the leader as it grows and choose two strong laterals to form the next tier. These should then be tied in at a 45-degree angle and any smaller shoots coming from these should be pruned to two or three buds. In subsequent winters prune the leading shoot as before and cut back and re-tie the new laterals to a near-horizontal position.
The older laterals can be pruned by about a third of their total length. Once established and the desired height reached, keep tying in the lateral stems as they spread out. In summer, prune the wispy stems on both the laterals and sub-laterals (the side shoots from the laterals) to about five or six buds from the main branches.
To promote flowering, prune the twining stems twice a year in mid-summer and in mid-winter. For wall-training, install a network of stout horizontal wires, attached to the wall at approximately 30cm (12in) intervals.
When planting, add some soil conditioner (well-rotted compost) to the planting hole and some mycorrhizal fungi to aid root establishment. After planting, prune the leading shoot of your wisteria back to approximately 90cm (3ft) above ground level and remove any side branches to encourage a new leader to form. In the summer of the first growing season, tie the leader in vertically and choose two new lateral shoots on either side of this leader.
Tie these onto the wires at a 45-degree angle. Prune smaller shoots on these lateral branches to two or three buds. In the first winter, prune the leader to a bud approximately 75cm (2.5ft) above the highest lateral branch. Gently untie the lateral branches, prune them (approx. a third), then re-tie onto a wire so they are nearly horizontal.
In subsequent summers, tie in the leader as it grows and choose two strong laterals to form the next tier. These should then be tied in at a 45-degree angle and any smaller shoots coming from these should be pruned to two or three buds. In subsequent winters prune the leading shoot as before and cut back and re-tie the new laterals to a near-horizontal position.
The older laterals can be pruned by about a third of their total length. Once established and the desired height reached, keep tying in the lateral stems as they spread out. In summer, prune the wispy stems on both the laterals and sub-laterals (the side shoots from the laterals) to about five or six buds from the main branches.
Please note:
This climber is deciduous so it will lose all its leaves in autumn, then fresh new foliage appears again each spring.
Warning
Humans/Pets: Harmful if eaten
GOES WELL WITH
Mediterranean
Mediterranean gardens can take on various guises from the rustic and rambling to the formal elegance of an Italian courtyard. However, they all have key features in common, including the use of exotic, sometimes tender, drought-tolerant plants in pots and
Read full article