Broadcast sowing mostly relates to outdoor lawns and practically all covered sowing.
Other outdoor plants can occasionally be sown in this manner, as can certain annuals, but it is rather rare.
Outdoors, on small surfaces, gardeners prefer using row-sowing or seed hole-sowing.
Technique for broadcast sowing
Spread the seeds along the ground in a regular, even manner, thrusting the seeds forward with a wide sweep of your arm.
Verify that the entire desired surface is covered.
Smart tip about broadcast sowing
If it seems difficult to get the right gesture, some stores sell seeders that can spread the seeds for you!