Silverhill Seeds in South Africa has added a useful new search function: description. http://www.silverhillseeds.co.za/bydescr.asp I searched using these terms, and got a gratifying list for each. scented butterfly water zone 6 I was surprised at how many zone 6 plants they list. I assume they are from the Drakensberg Mountains. That is the source of most of the South African plants that are commonly grown here. Diane Whitehead Victoria, British Columbia, Canada maritime zone 8, cool Mediterranean climate mild rainy winters, mild dry summers