High Yielding Heirloom Tomatoes
I would like to plant some heirloom varieties of tomatoes in my garden next year. In the past the varieties I've tried didn't produce a lot. I've tried Cherokee Purple and Brandywine and wonder now if the seeds were true or had been cross pollinated with some other varieties. One of the plants grew so huge that my cage wouldn't support it and it had very few tomatoes.
Ideally I would like tasty varieties that continue to fruit until frost rather than those that produce all at once and then die.
Any suggestions would be greatly appreciated.