As this image illustrates, a bout of severe weather can cause damage. In most winters there is a chance of a severe frost at some time and a good tip is to disconnect the water-butt and drain it to avoid the risk of splitting the water butt as the residual water freezes and expands. Evidence of an expensive mistake.
Winter can be a good time for weeding. I often find that the battle against the weeds has been lost by the end of the summer, especially as plants are so lush the weeds are hidden and only fully revealed as the time comes to clear the borders. After a frost is a good time to weed; the ground yields the weeds more easily.
It is good to look forward to Spring and Forget-me-nots (latin name Myosotis) often get a bad press as a zealous self seeding cottage plant. Bad press or not, forget-me-nots can offer much welcomed early spring colour and look fantastic with spring bedding and in a natural setting along side a stream in a semi wild patch.
For the best spring display of Forget-me-nots is a good time to thin out the plants. Forget-me-nots do self seed a lot, and if they are growing too close together, Forget-me-nots are prone to get mildew which can spread to ajoining plants. One year I didn't thin them out and they overcrowded other plants, and severely damaged a clump of Hellebores. It really is important for the health of the forget-me-nots and the plants around them that you thin them out in late autumn or early winter.