Pruning guide
How to prune eryngium × zabelii 'big blue'
Best time
Leave for winter interest; cut back in early spring
How often
Once a year in early spring; deadhead mid-summer if seeding is a concern
Technique
In early spring, cut all old stems to ground level with secateurs, being careful not to damage the emerging basal foliage or crown.
More eryngium × zabelii 'big blue' care
Pruning eryngium × zabelii 'big blue' — FAQ
When should I prune eryngium × zabelii 'big blue'?
Leave for winter interest; cut back in early spring. In early spring, cut all old stems to ground level with secateurs, being careful not to damage the emerging basal foliage or crown.
How often does eryngium × zabelii 'big blue' need pruning?
Once a year in early spring; deadhead mid-summer if seeding is a concern. Eryngium × zabelii 'Big Blue' needs very little pruning. This hybrid sea holly looks stunning in winter with dried steely-blue stems, so many gardeners leave it intact until early spring. Deadhead only if you want to reduce seeding. Cut old stems to the base as fresh basal growth appears.
How do you prune eryngium × zabelii 'big blue'?
In early spring, cut all old stems to ground level with secateurs, being careful not to damage the emerging basal foliage or crown.