We greensprout in Nov. and deeper than normal so they do not freeze, but, we have little to no snow and only get down to around minus 10°C/15°F and have no permafrost problems. Then we plant again in May/June for the second harvest in late Sep. or even Oct.
We just planted carrots, parsnips and onions as we got some sun and opened the water well again for the first time this year.
The prices are getting insane now here. Garlic is about $7.50/kilo (2.2 lbs); a cucumber is about $3.00 EACH...onions are going for about $6.00/kilo.
One neighbor planted his fields with onionseeds last week and bought his seeds here in Hungary for a whopping 300,000 Hungarian Forinth for only a POUND OF SEEDS ($750.00!!!)