Vegetable crops vary in their need for water. Some will do best with no watering after initial establishing, encouraging the roots to grow deeper. At the other end of the scale, those with fruits that hold a lot of water need frequent, but not large, amounts of water.
Water only to establish
Beetroot, Broccoli, Carrots, Garlic, Onions, Parsnips, Pumpkins, Rhubarb and Swedes
Water regularly when fruiting or tubers form
Broad beans, French beans, Peas and Maincrop potatoes
Water regularly once a week
Celery, Cucumber, Early potatoes, Fennel, Leeks, Lettuce, Oriental greens, Radishes, Runner Beans, Salad leaves and Spinach
Water regularly and often (twice a week at half the amount of weekly watering)
Courgettes, Marrows and Tomatoes
