Peas start to blossom at 15-17 nodes

When peas emerge from the pea pod, we are able to track their growth through means of "counting nodes" after the initial scale leaf. Each node produces a new leaf or branch off on the main stem. Typically, peas will start to bloom between the first 15-17 nodes. There are two types of pea plants, a full-leaf pea and an affilla or semi-leafless pea, both can be applied to the node scaling to measure maturity. The full-leafed pea will grow multiple leaves from a node, whereas a semi-leafless will produce a leaf and tendrils from a node. Semi-leafless have these tendrils in order to have better standing capability due to the heights a pea plant can reach.

Image by Saskatchewan Pulse Growers