Start dahlias into growth
Dahlia tubers stored over winter (or bought this year) can be started into growth. Place them in a light, warm place to sprout before planting. They will need misting with a spray bottle to stop them from drying out.
Sow veg in modules
In cold frames, greenhouses or polytunnels, sow beetroot, broad beans, summer and autumn cabbage, carrots, kale, leeks, lettuce and spring onions. These can all be sown in trays or plugs to be planted out towards the end of March.
Sow bedding plants
Start sowing bedding plants such as Impatiens, Viola and pansies in a heated propagator. Transplant when seedlings are forming their third or fourth leaf. This can take anywhere between four and six weeks.
Cut back Mahonias
Cut out the top rosette of leaves from the leggy stems of Mahonia x media cultivars to encourage branching.
Prepare beds for new roses when conditions allow. Avoid wet days (!) and frozen ground.