T. pentaphyllum can be 'effusive' and there are scree species too, which can make large colonies. Peter (UK) On 1 September 2014 21:13, Jane McGary <janemcgary@earthlink.net> wrote: > I think Iain is probably writing about Tropaeolum speciosum, which is > famously well adapted to Scotland. It is unlike the other species we were > discussing in that it has a spreading root system once established > (establishing it at first can be difficult). It is native to the Lake > District of south central Chile, which is moist and cool (like Scotland). I > have seen it growing well in gardens on the Oregon coast. >