Too early for annual seeds?

I was going to see what the weather looked like in a couple of weeks. I don't do tender and not many half hardy but I'm still not going to rush

I start sowing annuals in March. I have 3 little heated propagators and a cold greenhouse with a sand filled frame with a warming wire in it, where I put the baby plants once they are up. I've found that if you sow too early plants can go leggy from not enough light and unless you heat the greenhouse (expensive) you may lose plants if there is a very cold night.

But sweetpeas are hardy and it's best to sow them in autumn or February to give them a good start. But the young plants will need some protection, such as cold frame, cold greenhouse or porch.

Am about to get the big paraffin heater going in the greenhouse and sow a whole lot of stuff. This is the first spring I've had the GH so am looking forward to experimenting

I've already sowed a few annuals,started them off inside and they are now outside in the cold frames, seem to be doing ok

Would think it depends on what part of the country you are in.  I'm just about to start my first batch of sweet peas & some brasicas, the rest I'll leave for another 2-3 weeks.