The garden is covered with snow at the moment, but where I planted lettuce and covered the squares with plastic cloches, there are tiny little seedlings coming up. I was afraid that I'd put too much horse manure in the mix and that the nitrogen content would be too high, but obviously it's OK. A relief.
Have also bought a bit more wood and intend to make one more 2x4 bed. Prepared the ground for it before the first hard frosts hit in November, and it will be a nice project to finish before spring and the children come home. I have just enough soil mix for one more 2x4 left over from the beds I made before.