Hi Tam,
to NGA!
Living in a place like Saudi Arabia gives you the luxury to start seeds any time and keep them alive year 'round.
The root veggies should be grown during the coolest months of the year but the tomatoes, eggplants and peppers are perennials. If you get them started, they will live for multiple years.
If you are growing in containers, the containers need to be large (at least 10 - 15 gallons) and insulated. Most plants hate hot roots. Wrap them with some sort of insulating material or find thick, double walled pots.
Water is crucial and will have to be done everyday in the hottest months of the year.
