Answer: If you have enough garden space, you can certainly allow your tomato plants to sprawl on the ground. Give them a bed of straw so soil doesn't splash up on them when watering (or during rains) and get the fruit dirty. Any indeterminate variety can be allowed to sprawl. These include Buck's County, Better Boy, Burpee's Big Boy and Big Girl, and Long Keeper. All can be ordered through Burpee's website at http://www.burpee.com, or by phoning (800) 888-1447.
The yellowing late in the season could be a fungal disease or it could be a result of burn from your dishwashing soap sprays. As long as the harvest isn't affected, I wouldn't worry too much about it.
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