Choose a site with well-drained soil and full sun. Garlic doesn't like soggy soil!
Raised beds or pots will work well
Separate the garlic bulb into cloves, and plant each clove by pushing them into the soil (with the pointy side pointing up!) so that they will be covered by approx 2cm soil
Plant 10cm apart
During dry spells, water well to prevent the soil from drying out and to keep the soil a little cooler.
Problems & Pests:
Brown/orange spots on leaves – this is likely to be rust, a fungal disease that affects plants like leek, onion and garlic. If you do see it on garlic, then it is best to harvest your crop and use it as wet garlic rather than trying to store it.
Bulb split into several plants – this is an indication that the plant has over-matured, or it could be due to stress from hot, dry conditions. You can still use the garlic, but it won't store as well so is better pickled or used in pesto etc.
You can expect to harvest your garlic any time between late June and mid August.
Once the leaves start to turn yellow, its nearly time to harvest. Check one or two of your garlic bulbs by carefully lifting them with a trowel. If they look the right size and shape, then they are ready for harvesting.
Harvest them on a dry day if possible, then lay them out in a warm, dry place (a greenhouse works well) to dry out for a week or two. This is when the skin will form. Don’t take the foliage off until it is dried through. After this you can store them in a cool, dry place for several weeks/months.