Clubroot in Brussels sprouts is best avoided by what means?

What is the name given to the premature formation of a cauliflower curd when conditions are unfavourable to growth?

How closely related are the sweet potato (seen here) and the more usual potato grown in the UK?

Sweet corn is a variety of what?

Which of the names below is NOT a variety of carrot?

The picture below is of spinach. What is the name of a similar vegetable that it is often confused with it?

To get the best crop of celeriac how far apart should the plants be spaced?

What type of cabbage is this?

What type of vegetable is this?

The leek is the national symbol of which country?