Subtropical: Late January to September.
Temperate: July, August and September; then late January to February.
Cool: August through to December, though you may get away with a January crop.
Shoots emerge: Anywhere from six days to two months, depending on the time of year and the variety of the potato.
Days to maturity: 16-20 weeks, depending on variety and time of year; but you can bandicoot spuds from about four to six weeks on.