Your Leonotis does look like ‘nepetifolia’ ~ I grew both it and ‘leonurus’ last season.    From Wordnik.com.  [September Bloom Day 2009 « Fairegarden] Reference

I grew the Leonotis one year and hoped it would selfseed, but if it did, I inadvertently weeded it out.    From Wordnik.com.  [After Thanksgiving 2009 Muse Day* « Fairegarden] Reference

In the same bed is Lion's Tail (Leonotis leonurus).    From Wordnik.com.  [Statesman - AP Sports] Reference

Lion's Tail, or Leonotis leonurus, is another garden plant that's getting a lot of attention online from folks looking for a legal high.    From Wordnik.com.  [Statesman - AP Sports] Reference

‘Leonotis’ is doing superbly in your garden.    From Wordnik.com.  [After Thanksgiving 2009 Muse Day* « Fairegarden] Reference

"While at least two of the ingredients - Pedicularis densiflora and Leonotis leonurus - may have some psychoactive effect, little is known about the pharmacology and toxicology of the plant materials purportedly contained in 'spice' products, European drug experts warn.    From Wordnik.com.  [The Earth Times Online Newspaper] Reference

Leonotis nepetifolia.    From Wordnik.com.  [Two Trips to Gorilla Land and the Cataracts of the Congo Volume 2] Reference