These machines can also be very effective when it comes to sowing large areas. They are unique in the fact they “drill” the seed directly into the soil, with limited disturbance to the soil.
I do recommend preparing/roto-tilling the area prior to drilling because if you do not, your seedling won’t have a fair chance of competing with existing growth in the soil.
One drawback to using this equipment is if your mix contains a lot of smaller sized seed such as Papaver (Poppies), or Linaria (Snapdragon), it can be difficult to control the depth on these smaller seed varieties. Planting them too deep can hinder germination.
Smaller seeds like this can sometimes be left out to later be hand broadcasted on the surface.