Chillies like a warm, sunny spot, well drained soil and regular watering during dry weather so we have ours in a pot on the northern side of the deck. It loves it! As Amy said though "It produces well but geez it looks daggy". It is a scrappy looking bush but is happy to plump up some big juicy and bloody hot chillies for us.
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As it can get pretty cool where we are, growing it in a pot means that we can bring it well under cover if we expect frost as well.
Jayson