temperature for grass seed germination
Now, most germination failure (especially with warm season grass) is because the grass seed was planted too early. Grass seeds have an outer shell (the hull) that prevents germination until conditions are right. Proper soil temperature is a big factor in the success youâll have. For cool season grass, the ideal soil temperature is a minimum of 45-55 degrees (F). For warm season grass, the ideal soil temperature is a minimum of 55-65 degrees (F).