February 25, 2019
Seeds germinate at different speeds depending on the type of plant. Your seed packet will offer estimated germination times based on optimal temperature ranges, but you will likely germinate seeds much faster in a controlled environment with heat mats.
For example, I often have germination occur on lettuce seeds and mixed seeds of microgreens within only two to three days of seeding. Other seeds, such as bluebonnets, can take weeks. Temperature influences germination speeds.