Ask-a-Dave's-Gardener: What to do?, 3 by Crispy500

Crispy500 wrote:
I have this plant, which grows fabulous yellow flowers and it is very tall. You guys kindly told me it is from Madagascar, but I have forgotten the name..!!! Apologies.

I am in Cyprus and is now the beginning of summer. As you can see the tall stem has lost all color and is black - I assume dead?

What should I do with this? Cut it? Pull it off, trim it?

Help!!!

Thanks in advance

PS - There is a smaller newer one beginning to grow at the base of this.