This year I'm going to grow different varieties for different ripening times
again. My question is how far do I need to separate the corn plantings of
different things to get them not to interfere with each other's development
like this. Any suggestions?

I've done two varieties at the same time and in the same field, a
yellow and a white. Where the two types meet, I end up with bicolor
corn. So, you end up with three different corn syles! White, bicolor
and yellow. Didn't seem to hurt the taste at all.

My planting specs are 1.5" deep on the seed, 8.5" apart and 24" rows.
My planting area is 150 ft by 150 ft. I'm using an Earthway planter,
however, I would like to find something better to plant with. I don't
think the Earthway is designed to do as much at I'm asking it to do.

Hope your corn does well,

Eric D
Howell, MI