Taming the unruly tomato vine

By Barbara Damrosch,
We’re all rooting for the tomatoes right now, hoping for fast growth, strong stems and branches laden with fruit. How easily we can forget what happens when tomatoes run amok.

It’s probably too late to warn you not to grow too many of them and not to plant them too closely. But without dampening your enthusiasm, let’s talk about support. How much you invest in that is up to you. The easiest thing is to do nothing and let the plants flop on the ground. This works with the determinate types, which stop growing after a few feet and set all their fruits at once. But the indeterminate vining ones must be trained upward before their heavy fruit brings them to their knees in a tangled, impenetrable mess.

Tomato cages, if they’re strong, work fine. I make mine out of concrete-reinforcing wire, which I buy in five-foot-wide sheets from a building supply store. This sturdy mesh has six-inch-square openings through which I can easily reach the tomatoes for picking.

I form it into cylinders 16 inches in diameter and set them over the young plants to guide their ascent, pinching out the suckers at the bottom. (A sucker is a little shoot that emerges in the angle made by the leaf branch and the main stem.) The lowest suckers emerge just above the first pair of leaves, the smooth-edged seed leaves. Left to grow, they would branch out rather than up and just get in the way. After that, there’s little to do except remove wayward branches and a few more suckers if growth is rampant.