Container guide
Growing geranium 'johnson's blue' in a pot
Compost and drainage
Geranium 'Johnson's Blue' 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 geranium 'johnson's blue' in a pot
Containers dry far faster than open ground, so geranium 'johnson's blue' in a pot needs checking more often than the general guidance of "Water to establish in the first season; thereafter when the top few cm of soil is dry, roughly weekly in dry spells" — 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 geranium 'johnson's blue' care
Growing geranium 'johnson's blue' in containers — FAQ
Can you grow geranium 'johnson's blue' in a pot?
Yes — geranium 'johnson's blue' 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 75 cm, without so much spare compost that it stays soggy between waterings.
What size pot does geranium 'johnson's blue' 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 geranium 'johnson's blue' need in a container?
Geranium 'Johnson's Blue' 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 geranium 'johnson's blue' in a pot?
Containers dry far faster than open ground, so geranium 'johnson's blue' in a pot needs checking more often than the general guidance of "Water to establish in the first season; thereafter when the top few cm of soil is dry, roughly weekly in dry spells" — especially in summer, wind, or a heated room. Check the top few centimetres with a finger rather than watering on a fixed day.