When planting sweet corn seeds it is suggested to space the seeds 15" apart giving them plenty of room to grow. When using the Chapin Garden Seeder model 8701B, if you want more space in between each seed you can use a peice of tape to cover every other hole.
The Chapin Garden Seeder model 8701B can accommodate up to 20 seed types and there are 6 interchangeable seed plates included. Please refer to the manual on Page 4 for details.
Each seeder comes with their own seed plates and sizes can vary. Please use Earthway seed plates on Earthway spreaders and Chapin seed plates on the Chapin Garden Seeder model 8701B (as well as other models).
We apologize but are not able to provide the individual plates for the Chapin Garden Seeder model 8701B
Seed plate 5 on the Chapin Garden Seeder model 8701B is the one to use for radishes per the manual.