Collect rhizomes from a parent plant. If the plant is a year old, you should be able to separate around 10 rhizomes from the base. If the plant is 2 years old, you may be able to get up to 25 rhizomes for replanting.
Wash off the rhizomes thoroughly and refrigerate them if you are not going to plant them immediately.
Plant your rhizomes in spring after the danger of frost has passed. Rhizomes should be planted 4 inches deep and spaced 3 feet apart in rows separated by 3 feet.
Water the soil thoroughly after planting. Continue to keep soil moist throughout the first year of the new plant's life.
Weed the soil around the new miscanthus rhizomes regularly through spring and summer to help encourage miscanthus growth.