The goods

Each person is starting with the same items. Per person they are:

Two tomato plants of the "Better Boy" variety, whatever that means.

They're stylish, they're gray, they're.. plastic. They're pots. 0.71 cu. ft. or 18 qu.

And lastly the cream of the crop, the Miracle Grow™ potting mix. Because anything else is just dirt.

It is with these weapons our combatants enter the arena. Anything else is allowed from here on out. Whomever grows the better tomato (by whatever criteria we establish later) shall prove to be the greater warrior, er... gardener.