Understanding the process helps you troubleshoot problems with germination.
Germination is triggered by absorption of water through the seed coat.
The visual indicators of germination occur in a distinct sequence. First of all, the radicle root emerges first, near the tip end of the kernel, within two to three days in warm soils with adequate moisture. In cooler or drier soils, the radicle root may not emerge until one to two weeks after planting. The plumule emerges next, from the embryo side of the kernel, within one to many days of the appearance of the radicle, depending on soil temperature. The plumule eventually differentiates into the mesocotyl and coleoptile .