Depends entirely on what you are growing! What is in those packets?

Evergreen Bunching Onion
Tomato Super Boy 785 Hybrid
Moss Rose
Cilantro
Green Husk Tomatillo

It depends,if you begin them indoors they would need some artificial light.If you start them now outside in a hoophouse and leave them overnight they would need frost protection.I started tomatoes since December in a hoophouse outside with heatmats some are 4 inches now.I just make sure they are well protected and I gave them 4 hours of supplemental light.It can be tricky but you can try a few early seeds and see how they do.

The bunching onion and cilantro should be OK. Might be a bit cool for tomatoes and tomatillos. Even tho the last 2 could survive, they will have a long wait until they are warm and happy - which invites diseases, insects and problems.

bejay

In Southern California, the last frost is over by beginning of March. In mid January, I have planted my tomatoes and peppers in little paper pots for germination. The temps here doesn't go down to freezing point too often, so I just keep my young ones outside but still somewhat protected using a cover.

See link below, it gives normal first and last frost dates for all over the US.

How early exactly you want to start out depends a lot on what you're seeding, but my general rule of thumb is 4-6 weeks before the last frost date.

For my area, last frost is April 3rd. It's suggestion of going 2 weeks earlier than that is generally a good one, so that would make it March 20th. 4-6 weeks prior to that would be 2/7-2/21.

I'm getting antsy though, so I've already started quite a few peppers. I'll wait until end of Feb to start my tomatoes and corn though.

Here is a link that might be useful: Frost Dates

If your soil isn't frozen, you can still get the root veggies in now - garlic, onion sets, seed potatoes, beets, ...

I don't know about the rest of the country but last frost dates in the link posted above were way off for the cities I saw in my state.

I can't post a direct like to the site because its against Garden Web rules. However if you do a google search for "Last frost date by zip code" and go to the link at the top of the list you will get a more accurate last frost date.

I did the search for you. Just click below and go to whatever site is at the top of the list.

Here is a link that might be useful: Last frost date by zip code