Acorus can be propagated by splitting the clump at this time of year, a great plant to give to your gardening friends.

Can you split a plant in half?

Dividing plants is easy. Simply dig up the entire clump and then carefully divide the crown and root ball into two or more section, depending on the size of the clump. ... Once you have divided plants, shake off the excess soil and remove any dead growth. You might want to cut the plants back prior to replanting too.

Can sweet flags split?

Feed in-ground sweet flag by mulching with compost in the spring or early fall. To maintain the appearance of your sweet flag, divide it every two or three years. When you divide, remove the old foliage from the center of the sweet flag before replanting.