Garlic

How can I avoid rust attacking and spoiling my garlic crop? Each year I start with fresh garlic seed bulbs and I have tried planting all different areas of my garden, but they are always attacked by rust.

I planted garlic cloves evenly spaced out in pots with Daltons potting mix and positioned them in plenty of sunlight. The shoots were healthy, watering was pretty generous and I fed them with a balanced NPK mix. A week ago, when some of the lower leaves were browning, I harvested a few stalks, but the bulbs were pretty tiny. What did I do wrong?

I am new to gardening and have started my garden in pots around my flat! In terms of garlic, when should this be ready to harvest? I planted it on 21 June in 2017.

Can you tell me where I went wrong with growing my garlic this year? The bulbs were very small. I also grew some in a container with bulb mix, but they were also very small.