Which species of Cacallia has the sweet aroma?
I bought some Cacallia seed about 5 years ago for my former garden and I want to get some more but am unsure what species it was. The flowers have a strong scent of something like vanilla. I found out that Cacalia suaveolens is called Sweet-scented Indian-plantain which might mean just what it says.
Are there any Cacallia experts out there can tell me what to look for?