most of them seeds mixes, have a coating of a littl;e bit of fert lime and start up
most will grow as long as the ground isn't hard as a rock, and well the seeds make contact with dirt/soil, and not sit on leaves and that matter
most of the seeds in them are pretty fast growing and you should see a sprout of what's in the in 7 days or less on most seeds
in about 3 weeks, it should be about 3-4 inches tall on a good take or taller
al lot of teh seeds are like 45-80 day deals to mature status