Most people who grow from seed start their tomatoes indoors then plant out after the last frost date -- USDA website should be able to provide that for you if you don't already know it.

You can pretty much start any vegetable indoors right now, though it's pretty much too late for the cole veggies like cabbage and broccoli that like the cold. You can direct sow them in July for a fall crop if you want. Also, I'd wait till closer to your plant-out date to start cukes or green beans or melons -- they sprout quickly and often do better when sown directly into the ground.

This would be a great time to start some peppers or eggplant.

You could also start lettuce and spinach inside now, though you may be able to direct sow them as well, depending on your location/weather. It may also be time to direct sow radishes, peas, carrots, and beets outside in your area. You could also try some swiss chard.

I'm in Zone 5, and I've already either started all of these inside or am getting ready to direct sow them pretty soon. I started my tomatoes this week, and my peppers a couple weeks ago.

I was told it was too early to start tomatoes because i too started them over a week ago. So i could start my carrots inside now or outside but what about collards, potatoes, broccoli, peas, and green beans?

You haven't said where you are. Zone 5 tells us how cold it gets in your area, but not when your last frost date is. This is important because my Zone 5 frost dates may be different from yours. If you live in my area (Indiana) you're too late to start broccoli for spring from seed, but you may be able to purchase some transplants that are ready to go outside. For seed starting, you'd be better off waiting till summer to start them for a fall crop.

Peas and potatoes could go outside now, depending on your frost date and forecast. (This is very important; if you don't know your last frost date, this is the first thing you need to research -- do some reading online or contact your local Extension office for guidance.)

Green beans are direct-sowed after all chance of frost and the soil is warm. For me, this is late May. Your climate may vary.

Im in cornish maine i believe its 5a

Im in cornish maine i believe its 5a

Here's info on your last frost date. That is a big determining factor in when you can plant frost sensitive plants outside. You time your indoor sowing of those varieties so they will be the right size at planting time. Your zone is based on winter lows which don't have much to do with growing annual veggies. The zone is more important for perennials including trees and shrubs.

Last frost date: May 28
First fall frost date: Sept.8

All in all, a rather short growing season. Choose varieties with short days to maturity whenever possible, especially for tomatoes and peppers.

Here is a link that might be useful: Cornish Maine frost dates

Here's a calculator that I like for help with indoor sowing and direct seeding outdoors. Start by filling in YOUR last frost date near the top and then have it calculate things for you. Most veggies and flowers you might want to grow are on the chart.

Looks like TODAY is good for starting tomatoes, as is the next few weeks. Peas could be direct seeded outdoors now. Lot of great info on the chart once you enter your frost date.

We are having very cold, rainy, sleety weather by us. I see that you probably have longer yet to wait for warm weather than we do. In some strange way that makes our poor weather seem a bit more bearable.

Here is a link that might be useful: Seed starting calculator

I am in WI and have a similar length growing season to you (though our summers get hotter and our winters get colder) You started tomatoes a little early, but not by much. they should be fine if you have decent lights. If they get overly tall, you can plant them extra deep when you put them outside - tomatoes will just grow more roots along the buried part of the stems.

It is actually a bit late to start peppers and egg plants. I started mine a few weeks ago. They are slow growers.

I dont think its to late to start cole crops. Mine are started but are still tiny. Last year I had them outside by now, but this year the snow hasn't melted yet!

Dont start carrots or radishes inside - they need to be direct seeded.

If you search online you can probably find a recommended planting time for vegetables in your area - work from there. Most things-sow the seed indoors 3-5 weeks before you plant them out. Peppers & Eggplant 10 weeks, Tomatoes 6 weeks.