These plants are available potted up (using a suitable aquatic compost) into aquatic pots. These pots are made of a fine mesh, which allows water to circulate through the compost, providing the plants with both oxygen and nutrients. If you are using them as a aquatic plant, they can be planted up to a water covering of 5cm (2") deep. For planting above the waterline, choose our 9cm pots for planting in boggy, reliably damp soils. Remove dead or spent clumps every few years to make way for self-seeded plants to develop.