Container guide
Growing silver spike grass in a pot
Compost and drainage
silver spike 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 silver spike grass in a pot
Containers dry far faster than open ground, so silver spike grass in a pot needs checking more often than the general guidance of "Weekly in the first season; monthly deep watering once established" — 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 silver spike grass care
Growing silver spike grass in containers — FAQ
Can you grow silver spike grass in a pot?
Yes — silver spike 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 silver spike 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 silver spike grass need in a container?
silver spike 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 silver spike grass in a pot?
Containers dry far faster than open ground, so silver spike grass in a pot needs checking more often than the general guidance of "Weekly in the first season; monthly deep watering once established" — especially in summer, wind, or a heated room. Check the top few centimetres with a finger rather than watering on a fixed day.