Wherever you can see a leaf has emerged from the stem, whether it be one leaf or many, this is a node.

As depicted in the diagram below, the space between these nodes is known as the internode. If you think about a plant’s stem much like a transit map, the internodes are the railway lines, and the nodes are the train stations. These nodes are predominantly where your roots will form, as most of the nutrients stored within the stem are transported here.