Growli

Container guide

Growing corn plant in a pot

Verdict
Ideal in pots
Pot size
15-20 cm (6-8 in) across
Mature size
Typically 1.2-1.8m (4-6ft) tall indoors over many years, occasionally taller; spread around 0.3-0.9m (1-3ft). Slow growth means it stays manageable as a houseplant for a long time.

Compost and drainage

Corn Plant 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 corn plant in a pot

Containers dry far faster than open ground, so corn plant in a pot needs checking more often than the general guidance of "When the top 2.5cm (1in) of compost is dry, roughly every 7-10 days in summer" — 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 corn plant care

Growing corn plant in containers — FAQ

Can you grow corn plant in a pot?

Corn Plant is well suited to container growing — at about 6 cm mature it is comfortably pot-sized. A container around 15-20 cm (6-8 in) across gives it room without leaving the compost sitting wet, which is the usual mistake when people over-pot a small plant.

What size pot does corn plant need?

Aim for a container 15-20 cm (6-8 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 corn plant need in a container?

Corn Plant 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 corn plant in a pot?

Containers dry far faster than open ground, so corn plant in a pot needs checking more often than the general guidance of "When the top 2.5cm (1in) of compost is dry, roughly every 7-10 days in summer" — especially in summer, wind, or a heated room. Check the top few centimetres with a finger rather than watering on a fixed day.