Container guide
Growing eryngium giganteum 'silver ghost' in a pot
Compost and drainage
Eryngium giganteum 'Silver Ghost' needs sharp drainage, so this matters more in a pot than in the ground. Use a free-draining mix (add perlite, grit or bark to standard compost), always pick a container with drainage holes, and never let it stand in a saucer of water.
Watering eryngium giganteum 'silver ghost' in a pot
Containers dry far faster than open ground, so eryngium giganteum 'silver ghost' in a pot needs checking more often than the general guidance of "Rarely once established; only in prolonged drought, roughly every 2-3 weeks" — especially in summer, wind, or a heated room. Check the top few centimetres with a finger rather than watering on a fixed day.
Potting on
Pot on when roots show through the drainage holes or growth slows noticeably — usually every 1-2 years for a plant this size. Move up one pot size only; jumping several sizes leaves wet compost the roots cannot reach, and that is what rots them.
More eryngium giganteum 'silver ghost' care
- Growing miss wilmott's ghost in a pot — the species this cultivar belongs to
- Full eryngium giganteum 'silver ghost' care guide
- Best soil for eryngium giganteum 'silver ghost'
- When to repot eryngium giganteum 'silver ghost'
- How often to water eryngium giganteum 'silver ghost'
- How to overwinter eryngium giganteum 'silver ghost'
- Best app for indoor plants — reminders and light checks tested
Growing eryngium giganteum 'silver ghost' in containers — FAQ
Can you grow eryngium giganteum 'silver ghost' in a pot?
Yes — eryngium giganteum 'silver ghost' does well in a pot. Aim for a container around 20-30 cm (8-12 in) across: enough root room for it to reach about 1.2 m, without so much spare compost that it stays soggy between waterings.
What size pot does eryngium giganteum 'silver ghost' need?
Aim for a container 20-30 cm (8-12 in) across. Pot on when roots show through the drainage holes or growth slows noticeably — usually every 1-2 years for a plant this size. Move up one pot size only; jumping several sizes leaves wet compost the roots cannot reach, and that is what rots them.
What compost and drainage does eryngium giganteum 'silver ghost' need in a container?
Eryngium giganteum 'Silver Ghost' needs sharp drainage, so this matters more in a pot than in the ground. Use a free-draining mix (add perlite, grit or bark to standard compost), always pick a container with drainage holes, and never let it stand in a saucer of water.
How often should I water eryngium giganteum 'silver ghost' in a pot?
Containers dry far faster than open ground, so eryngium giganteum 'silver ghost' in a pot needs checking more often than the general guidance of "Rarely once established; only in prolonged drought, roughly every 2-3 weeks" — especially in summer, wind, or a heated room. Check the top few centimetres with a finger rather than watering on a fixed day.