Bigger is better with containers. You can be sure the pot it came in is too small, though, because shipping large containers is expensive. Tomatoes are tough and usually won't suffer much shock from being repotted (even when they're large). Just be careful with the stem and don't disturb the roots too much and you should be fine. Contrary to the prior recommendation, I would only fill the new container up to the level so that the root ball will be sitting at the proper height. Once the plant is in the new container, hold it up and pack soil around the sides. Then water it in and repeat until it's settled. For fertilizer, get a tomato fertilizer with calcium and other micronutrients. Apply at the label rate. Vegetables in containers need complete fertilizers. This post was edited by gosalsk on Sat, May 24, 14 at 9:23

I've been pruning the lower leaves, suckers and some of the large leaves at the top (but only the ones that have been yellowing or otherwise appearing unhealthy or nibbled at), there's still lots of top leaves though. When it was extremely wilted, I over-watered it a bit, but only from the tray beneath rather than the top of the soil. It went from wilted to perky within the afternoon, so now I'm just watering (again from the dish beneath) in the morning to keep the soil just wet enough that it doesn't seize up. Leaves have been kept dry. What should I be ideally "feeding" it? I've used Miracle Gro since bringing it home but am open to other options.

How big are the tomatoes getting? And what kinds of tomatoes are they? I mean, if you are growing patio toms and getting big means 4 inches tall that's one thing- if they are giant indets and are a couple feet tall- that's quite another. And it can also depend on how warm your bed is- and if you are prepared with some sort of coverage/capping type of scenario in case you get hit with a late chill. It can also depend on what your micro-climate is. Like for me, looking at a general map- I'm zone 5. But by going into detail, and considering my micro-climate, I'm actually a zone 6. But I still don't put out tomatoes till May, regardless of how nice the last frost date is. And even so, I'm prepared with hot caps and mulch deep just in case. Because even though I'm supposed to be frost free by then, it has happened where I get a late frost or even (gasp) on one occasion a late snow.

I hate to be a negative ninny, but that size container would not work for two tomato plants for me. I have 10 tomato plants in pots right now they are producing but the biggest part of the harvest has already taken place. I even called my favorite nursery the other day to ask what size pots to plant two Pentas in and they told me a 24 inch pot so apparently they think the bigger the pot the better. Here and the south Texas I would be watering that pot three or four times every day