Container guide
Growing purple fountain grass in a pot
Compost and drainage
Purple Fountain Grass 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 purple fountain grass in a pot
Containers dry far faster than open ground, so purple fountain grass in a pot needs checking more often than the general guidance of "When the top 2-3 cm of soil dries, roughly weekly in the ground and more often in containers" — 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 purple fountain grass care
Growing purple fountain grass in containers — FAQ
Can you grow purple fountain grass in a pot?
Yes — purple fountain grass 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 purple fountain grass 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 purple fountain grass need in a container?
Purple Fountain Grass 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 purple fountain grass in a pot?
Containers dry far faster than open ground, so purple fountain grass in a pot needs checking more often than the general guidance of "When the top 2-3 cm of soil dries, roughly weekly in the ground and more often in containers" — especially in summer, wind, or a heated room. Check the top few centimetres with a finger rather than watering on a fixed day.