I picked my first the last week of July here outside of Portland, OR. Some Juliet grape tomatos that have been coming in as big as small Romas. The Early Girls started to come in the next week. Health Kick, Oregon Spring, and Willamette have been coming in this week.
Once the Roma's start coming in, I'll start making some sauce for freezing. I've had a couple odd-balls ripen already in the Roma's, but I think it'll be next week before they start coming in.
I began with starts from 4" pots the third weekend of May. (I was planning on the second week, but something came up.) This was the first year I used sheets of red sheet mulch, and instead of drip irrigation, I placed a soaker hose in a big spiral patern in the garden under the red sheets.
I'm amazed at the size of the plants, and the number of fruits on them. I put just 9 plants in a slightly bigger space than I used for 12 plants in the past years. Before I realized it, they had outgrown their 5' cages, and the jungle is thicker than ever. And it's not all leaves. I think I'm going to have as much from these 9, if not more, than I would get from 12 in the past.
I'd have to say that the primary difference has been the red sheet mulch. It's not making much difference now, since sunlight only gets to the edges now. But by the end of June, if I had tried to tell the week based on the size of the plants, I would have guessed the third week of July.
Based on my limited experience, I highly recommend red sheet mulch.