It's important with earlies and a good idea with maincrops to 'chit' the seed potatoes first before planting; this means allowing them to start sprouting shoots. Stand them in egg boxes or similar in a light, frost-free place. The potatoes are ready to plant when the shoots are about 3cm (1in) long. On early potatoes, rub off the weakest shoots, leaving four per tuber.
Here on Skye, we plant our potatoes outside from April onwards....any earlier and they get waterlogged!
Current seed potato and garlic availablability at the Garden centre is shown in the photogalaries below.