With a warmer than average winter and hardly any snow, I have noticed that many of the plants seem to keep growing.
The little balls of moss are very hard to miss as they grow all over the lawn or any place there is decaying material.
The sempervivums which are cold hardy to zone 4 seem to still be growing through a zone 6 winter and they should make their most growth from April through June since they seem to prefer cooler weather like any other cold hardy succulent. These do tend to come out of the soil with the freeze thaw cycle so I need to make sure I stick them back in after the final thaw in the spring so they can send roots down.
I have divided up the sedums to fill out a lot of space for the spring, but they also seem to be growing well into the winter.
Even some of the garlic I planted in early December are starting to sprout which indicates that even the later batches are rooting out by now. I have planted both soft neck and hard neck varieties, but the hard necks seem to not be sprouting at all yet.
I used to think tree peonies had to wait until March to start making progress, but after learning about vernalization which occurs for most plants best around 40-45F which we have seen a lot of in the last month, it seems like the bud development has already started and a difference can be seen in the size of these buds, especially when one of them is partially opened.
After observing the buds off the fruit and deciduous trees, it looks like those are starting to set as well.
Finally some plants like the yucca seem to never stop growing and don't seem to be affected at all by the change in seasons. It might need a dormancy for flowering, but otherwise it looks the same all year.