I have another question

[Topaz farm]

I have seen mentioned several times.... a tomato plant has potato leaves.

I don't have a clue as to what this means. Good, bad what? How can you tell the difference?

[gulfcoastguy]

It means that the leaves look like the leaves on Iish potatoes. These leaves are typical on Brandywine type tomatoes and tomatoes derived from the same genetic stock.

[redbrick]

A poato-leaf tomato is a (usually German) variety that has leaves without the deeply cut margins of a regular tomato, which gives them more of a spear shape. In other words, more like a potato plant. In general, potato-leaf varieties bear larger, more meaty fruit. Some strains of Brandywine are potato-leaf, as are Howard's German, "Potato-Leaf", and Italian Oxheart. Personally, I think they also have better flavor.
The first time I grew Howard's German, I didn't know it was a potato-leaf. When the plants grew out, I thought there was something seriously wrong. Its leaves aren't just potato-leaf, they're also extremely long and strappy, almost like seaweed! I was in a panic for a couple of weeks!
Hope this helps

[Topaz farm]

Thank you both very much, your answers were very helpful. Now I know two new things, potato leaf tomato plants and dent corn. :)