Mulberries grow in almost any climate and are dormant in winter in colder areas. They need little fertiliser, little water and grow happily in poor soils.
Mulberries can grow successfully in a pot, but you will need to trim them back and watch the roots to prevent them from becoming pot bound.
If left to their own devices they can grow to 5 metres. They can take a harsh pruning. I cut my back by almost a half every Autumn just to stop it from taking over the backyard.
Mulberries make great cordials and jams (great in a mixed berry jam) and taste wonderful on their own. You will find that you are very popular during silkworm season, when neighbourhood children seek out the leaves.