What is the Corkscrew Willow?
The Corkscrew Willow (Salix matsudana ‘Tortuosa’) is known for its twisted, corkscrew-like shoots. It grows quickly and can reach up to 10 meters in height, making it especially eye-catching in winter. However, without regular pruning, it tends to become woody and sparse.
Key Points in Brief
- Why prune? Prevents aging, maintains shape, and promotes healthy new shoots.
- When to prune? Every 3-5 years in early spring, before the strict regulations of the Federal Nature Conservation Act limit radical pruning from March onwards.
- How to prune? Remove one-third to half of the oldest shoots and thin out the crown. Perform a radical cut if necessary (10 cm above the ground).
Why is Pruning Important?
Without pruning, the crown loses shape over the years, the branches become brittle, and growth becomes sparse. Regular pruning encourages new, healthy shoots and a compact, decorative form.
How to Prune Correctly:
- Thinning: Remove sick, dead, or crossing branches.
- Shorten Old Shoots: Cut one-third to a maximum of half of the oldest shoots close to the ground.
- Radical Cut: After 15+ years, cut all shoots 10 cm above the ground – the plant will easily regrow.
Tip: Willows growing in pots need more frequent pruning, as they should not get too large.
Training Corkscrew Willow as a Standard Tree
To grow a standard tree:
- Let the willow grow to 250-300 cm.
- Remove all side shoots up to a height of 2 meters.
- Top the crown to encourage branching.
- Regularly remove new side shoots on the trunk.