Great tool, wouldn't garden without it. I've been using one of these for about 7-8 years and it makes gardening easy. I have a large garden and raise a lot of sweet corn. It's especially good with corn and beans. I have two different size corn plates, one plants close and the other plants farther apart. The one plate takes garger grain than the other. The larger grain using the smaller plate is the reason why seed gets stuck in the holes and pops out or jams the seeder. It's also great for beans. I used it for the first time this year for cucumbers and it plants them very or too close but all you have to do is walk through and thin them out. It's kinda hard to use in sod ground because the shoe keeps picking up the sod. Ground needs to be well tilled. I love mine ,in fact I have two of them.  I don't care for the marker that comes with it , I like to string off my rows and make them a little wider and straighter. Alan Bane