Andy
Can not tell you anything about Planet Jr.....but a dash of
talcum powder in the hopper greatly improves Earthway performance. Be sure to get some powder behind the seed
plate as well. I use a "fleet" of 4 Earthways and all get
the Shower to Shower treatment for all seeds, large or small.
Good Luck!
Bud

Andy, Planet Jr's will seed sweetcorn, you will need to use the larger plate and expect to thin the plants by hand to 6"-12" a part... Bob.

Andy:I use 50 yr old Planet Jr. Assuming the plates are the same--hole 32-34.Corn seed varies so check size.Seed per yd. check.Place seed in hopper-mark wheel with chalk-hold handles down to raise wheel slightly off ground-open gate & spin wheel 1 revolution at walking speed-Close gale.Count seed.Adjust.

Thanks for the replies. I tried the powder in the Earthway, and while the corn and beans aren't up yet, it sure did smell nice in the garden! I'll check the spacings once they're up to see if it helped.

I'll keep my eye out for a decent price on a used Planet Jr, I'd like to find one nearby if possible.

Thanks again to all who responded.

Andy

The earthway is actually a bit more sophisticated than the Planet. The planet merely agitates the seed whereas the earthway actually meters it (with little scoops).

When I was doing growing on a commercial scale we were worried that the Planet would not work well with non-round seeds so we we bought the optional brush agitator that actually sweeps past the holes. We had very good luck though I will say that for lettuce we bought pelletized seed.

We never used it with corn since we already had a corn planter, but we did fine with green and wax beens (never tried limas).

Best of luck.