a number of things, although temperature is normally the catalyst.
Dormant
Seasonal rains can cause seeds to sprout that may have lain dormant for years. They quickly growm flower and produce new seeds before the drought returns.
A normal been seed is dormant (asleep) until the right conditions prevail to allow it to sprout and grow, but throughout it is alive.
Seeds need a warm temperature to sprout. So if they are kept in a cold temperature they will not sprout
Yes seeds need water to sprout.
Seeds need a warm temperature to sprout. So if they are kept in a cold temperature they will not sprout
Cactsus seeds can lie dormant for many years so that they can survive until they have enough water to germinate and sprout. In the desert, many years may need to pass before enough water falls in the right season for cactus seeds to germinate.
flax seeds can't sprout in water
squash seeds sprout faster then any other seed
The reason seeds don't sprout is because they don't get enough water and sunlight.
large seeds
The seeds are dormant but alive.