Climate has a big effect on growing vegetables and herbs, and correctly identifying your climate before you start your gardening will help you immensely when identifying what to grow and when to grow it, and ensuring that you reap the benefits of a year round productive garden.
Many products provided on this website also depend greatly on knowing what climate you are in, so that you can select the correct product edition for your climate zone and assign the correct seasons and instructions for your garden.
Cold Climate
If you have ANY frosts in your area, then your Climate is usually going to be classed as Cold.
There are many vegetables that you can grow in a Cold climate: Brussels sprouts, broad beans, broccoli, cabbage, cauliflower, peas, spinach, silver beet, carrots [all year] lettuce, coriander, garlic and rocket. Potatoes, tomatoes, capsicum, zucchini, watermelon, and cucumber cannot be planted out until after that last frost.
Tips: Whilst you can start your seeds in punnets inside in Spring, [using Jiffy pots - you don't have to disturb the roots when planting out] do not plant out until AFTER your last frost. This is usually after the last Full Moon. If in doubt, ask your local Nursery. They'll know!
Tropical Climate
If you live in a Tropical zone, then the system used for cold climate will still be helpful.
Sub-Tropical is a great place to grow most vegetables, although it might be difficult to grow coriander and lettuce, as they bolt easily.
Temperate Climate
A temperate is the best climate for growing vegetables, and you have the greatest chance of growing every vegetable known to man!
You can plant carrot seeds every 2-3 weeks, and have a constant supply all year round. The same applies to lettuce, although if it gets very hot, you must shade your plants, mulch heavily, and water often to stop them bolting.
In a Temperate climate, and having a garden bed approximately 3 metres by 10 metres [30 square metres], you should be able to produce approximately $500 worth of vegetables. Think how lovely it is to go out into your garden before dinner and say "Now, what vegetables can we have tonight?" Fresh as, and no spray. Environmentally conscious as you haven't leapt into a car to buy at the supermarket! A saving on petrol, tyres, oil and maintenance. So the $500 worth of veg. is probably much more.
For any climate, think about an elevated garden bed which is waist high. These means no bending, no weeding, no digging, and great drainage! The plans for an elevated garden bed are in the PLANT-A-GENDA-FOLDA! and also featured in this Hints and Recipes section. It will take one weekend to make, but then it's yours for life. You will then need to add compost, vermiculite, manure etc. before you plant a new crop. However, that's not difficult.