Early fruiting tomato varieties, for example, are best for this climate. Look at maturity dates listed on plant labels. It's wise to stick to varieties that mature in 60 to 70 days. Choose resistant varieties. Many vegetables are genetically bred to resist certain pests.
Tomatoes are good example.
Locate plants according to their needs. Most veggies need full sun. Rotate vegetable plants from one location to another from year to year. Continuous culture of the same kind of plant in the same location provides an opportunity for disease-causing organisms to build up. It is best to grow the same or closely related plants in the same soil only once in every 3 years.