Making flower seeds sprout, more commonly called germination, forces the embryonic flower seed out of its exterior shell. Most flower seeds easily germinate within a certain time frame, usually specified on its seed packet. If you choose to force the flower seed shell open faster and with better results, you'll need to use more than soil and water for your flower seed germination efforts.
Some seeds, such as morning-glory, have a tough exterior shell and may soften and open their outer layers when soaked in water. Soaking takes as little as 12 hours to as long as several days. Soak the seeds until they swell, then plant immediately. Change the water around the seed every 24 hours.
Stratification, the process of using warmth or cold, forces the seed to release its dormant embryo. Whether the seed needs warmth or cold will depend on each individual seed and is often included on the seed packet instructions. Place the seed in a refrigerator in moistened soil if it requires cold. For warm forcing, keep the seed heated to 77 degrees Fahrenheit either in a greenhouse or with consistent heat applied underneath it, such as with a heating mat.
Provide adequate lighting to increase a flower seed's sprouting rate. Select an indoor or outdoor location in full sunlight. When growing indoors seeds sprout faster if placed under grow lights; mimic the natural daylight rhythm by turning on grow lights first thing in the morning and turning them off at sunset, equaling about 16 hours of light per day. Suspend the grow lights 1 to 2 inches above the seeds.