Leonotis Nepetifolia

Very cool and architectural plants! 
I grow these tall plants every year, and they give quite a show! 

Native to Africa and Southern India, this is a colourful plant with a unique appearance. Fortunately, it's also pretty simple to grow. Sow the seeds indoors at the end of April in moist soil, and keep the same conditions until they germinate.

Can grow up to 3 m ..  More like 2 m in my garden.