Sequoia sempervirens or the Coastal Redwood is the tallest tree on earth having been known to reach over 100 metres in height, though some even larger were felled as the first settlers arrived on the west coast of America in the 18th century.
In average Australian conditions the tallest they might reach would be around 30 metres.
These are natives of the cooler, foggy and damp coastal regions of northern California and Oregon so like conditions to be cool, moist and sheltered.
They are conical in shape with a tapered trunk that is covered in fissured, deep red bark that is soft to the touch.
The branches tend to droop slightly and the needles are larger and thicker than its closest relative the Sequoiadenron gigantea.
This is a fast growing tree, but you'll need plenty of patience if you want to see it reach its towering best height. You'll also need a humungous garden, or preferably a country estate with vast rolling lawns so you can appreciate its scale and shape.
They are popular in botanic gardens - this one illustrated here grows in the Mount Tomah Botanic Gardens in the blue mountains just outside of Sydney.