Initial growth seems to focus on creating a deep root, a shallow container thus being unsuitable.
The first visible sign of germination is a slender shoot with the beginnings of the first true leaves, at which point the root is likely to have reached a depth of 6-8 inches. Several weeks after the 'pink' stage noted above the familiar deep red seed covering will form and the seed will rapidly shrink and rattle inside the pod. At this stage the pods will be very tough, requiring a sharp knife to cut through to remove seeds - but the space between the seed and the pod reduces the danger of cutting into the seeds. At first the seed coat is like soft plastic and only minimal scarification is needed to permit imbibing of water and swelling back to the size of the original green seed. Bit by bit this outer coat will harden, and as it does a greater degree of scarification will be required.