Posted: 19/01/2015 at 17:31
This time of year, if the soil is not frozen or waterlogged, is good for planting trees, shrubs and roses whether grown in pots or bare root as this gives a bit of time for the roots to get bedded in and develop before they get stressed by the spring surge of growth and the demands for food and water to fuel it all.
However, I prefer to get this done by December when the soil is still warm but the plants are dormant as this improves the chances of surviving and thriving.
Unless you have a light box, daily light levels are too low to sow new seeds and grow them on without risking their getting very leggy and weak. It's too cold and wet for moving or planting perennials and biennials and far too early for annuals.
If you're depserate, you could maybe start chitting early potatoes and making a trench for beans.