Stem plants. These aquarium plants can have several leaves, pairs of leaves or single, alternate leaves growing along a stem. They grow fast and can need quite a regular trimming. Leaf nodes, where the leaf joins the stem, can produce leaves, roots or new shoots.

Directions: Cut above the node, and then plant in the substrate with at least one node buried, making sure the stem end is as shallow as possible in the substrate by pushing it deep and then pulling up until it is shallow. This promotes root growth much faster! Plant each stem allowing enough light between stems to reach the lower leaves.

(Info taken from Freshwater Plants)