variegated maiden grass

Giant silver grass (Miscanthus x giganteus) requires ample water during its active growing season, which is typically from spring through autumn. As a general rule of thumb, water this species when the soil feels dry to a depth of 1-2 inches and water deeply until runoff begins to occur. Watering too often is not recommended as this can cause root rot and other diseases. If the temperatures are hot and the air is dry, the grass may require watering once or twice a week, whereas in milder climates it can go for a week or more between waterings. Always check the soil moisture before watering to avoid overwatering.

Giant silver grass prefers full sun to partial shade and requires at least 6 to 8 hours of direct sunlight per day for optimal growth. It is best to ensure the plant receives early morning sunlight, as this will allow the foliage to dry out before nightfall and prevent any fungal or disease issues. When it comes to temperatures, giant silver grass is a very cold-hardy species and can tolerate temperatures as low as -19℃ (or -2°F). In order for the species to grow its best and reach its mature size of roughly 3-4 meters, it must receive full sun.

Giant silver grass (Miscanthus x giganteus) should be pruned in mid- to late spring. Pruning should be focused on removing any winter damage and cutting back any dead stems. This can be done by cutting them off at the plant’s base. Additionally, if desired, the tips of the new growth can be trimmed back in order to encourage fuller, denser new growth. Pruning of giant silver grass should be done lightly and with care- it is a grass and trimming too aggressively could end up harming some plants.