For some things the recommendation is to start them as soon as the ground can be worked. Down here that's not an issue, my growing seasons for cool weather crops are all messed up. I start them in October. When I was in Arkansas that was usually late February, not because of the ground being frozen, I was trying to catch a time the ground was dry enough to work. Sometimes that dry window was really short so I'd do as much ground preparation in the fall as I could. All gardening is local, we all have our own things to contend with.
I should rephrase that-- here the ground dosnt freeze / deep freeze,
Feb. 2018 we did get snowed in for 3 weeks ,,,,, snow was 3 feet deep, an odd year,,
only due to our road is a 16 degree hill and you can get a vehicle up it- high center and all---
but if and when it has snowed other times it melts off pretty quick,
Jan 202 it melted in two days,
Feb. 2021, this was all we got
I can grow kale and romaine year round, in fact I have 10 small romaine plants in the garden bed. I let the summer lettuce go to seed and these popped up 2 weeks ago,
I direst seed, the only starts I do are things like peppers, tomatoes, egg plant
I grow mostly cool weather crops. We get sun but not heat.
I So, I plant what does well in this spot,