I know what you’re thinking. “Where can I get the seeds for a square tomato”?
Believe it or not, you can grow your own square tomato from any seed you have lying around.
You’re not actually growing a genetically enhanced variety, you’re really just manipulating the tomato during its growing process.

The process is simple. You have to create a square plastic box for it to grow in. Make sure the box is smaller than final size of the tomato. The reason is that once the tomato feels resistance against the sides of the box, it is forced to take the path of least resistance. This results in the tomato growing into the corners of the box, hopefully filling it completely.

Making the box

Find any clear plastic that is thick enough to withstand the pressure of the growing tomato, yet flexible enough to bend at 90 degrees.

Simply draw 4 squares the exact same size horizontally
Now draw 2 boxes the same size on each side vertically.
Next, cut a slit in one of the end boxes big enough to allow the stem of the plant to easily slip through.
Now fold the box at the lines and tape it leaving the end with the slit open.

Slip the box onto a young tomato allowing the stem to slide through the slit in the open end.
Close the lid and tape it shut.
You now have a tomato enclosed in a plastic box.

Now the wait

This is the hardest part of all. If you’re like me, every morning you will run out to see if the tomato is growing. We all know that a watched pot never boils. It isn’t until you decide to stop watching, that it will balloon to the size of the box.

My mistake was in using this on a hybrid tomato that I was re-growing so the tomatoes never produced uniform sizes.
I recommend that you use a plant that produces consistent fruit sizes. It will be a lot easier. I had to try this 3 time before one actually behaved.

If by chance, you give this a try, post a comment and a link. I’d like to see them.
Happy square tomato growing.