Because kale is a leafy brassica, it is much closer than many
of the others to the original wild cabbage.
Lettuce is an odd vegetable, which is as often used for decorative purposes as for taste and nutrition.
There is an increasing number of small leaves that provide the traditional greenery for salads.
Salad vegetables, which are eaten raw, are quick to grow because they have to be harvested while they are still young.
Spinach is the bane of most children and many adults.
Swiss chard has a number of alternative names, including chard
and seakale beet.