How long does it take for grass seed to germinate?
Depending on mixture, you should expect initial growth for most varieties to begin in 7 days provided adequate moisture is available, soil is warm enough and conditions allow for germination. Kentucky Bluegrass will take up to 30 days to germinate. The more ryegrass in the mix the faster the grass will establish. The more bluegrass in the mix the slower the grass will establish. First mowing should take place in 3-6 weeks when the grass blades reach 3″ in height.
