At this time of year, the ground may still be frozen. You’ll know it if you try to dig and it feels like you’re hitting stone. Once it’s warm enough to get a spade or fork through, turn the soil once and loosen any clumps in preparation for sowing later on. You can warm any frozen ground with fleece, polythene or plastic cloches available in stock. These are helpful to use throughout the remainder of winter to protect your tender plants from the frost.