Germination can occur throughout the year, however, given adequate moisture.
Provide the plants with well-drained soil that has adequate moisture.
However, it requires adequate moisture for germination and early growth.
In the garden be sure to provide them a spot where they will receive good light and adequate moisture.
Then grass does die from lack of adequate moisture.
Grass always seems to green up with the return of adequate moisture and cooler growing weather.
Climate is also important since adequate moisture must be present for effective solution.
Making sure the soil has adequate moisture for the first several weeks after planting is essential.
Without adequate moisture it can quickly dry out and die.
Call it cheating, perhaps, but the cardinal flower is known to need adequate moisture during its growing season.