Answer: Indeterminate tomato vines can certainly grow huge over the course of the summer. They need large, sturdy supports spaced generously far apart for that reason. The little two ring wire cages are best for determinate types that stay smaller. You can allow the vines to sprawl, it will not hurt them to do that. Use organic mulch to cover the ground and keep the tomatoes clean. You can prune suckers or small side branches that develop between the main stems. This will reduce the amount of foliage somewhat and prevent too much shade on the tomatoes so they will ripen better. But, it's still early to be looking for ripe fruits!
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