I never saw a hummer around the blooms but I sure was... I loved the fragrance in the evenings. Mine also dies down totally outdoors in winter. Do you leave yours outside year around? Perhaps when you have a spare pup, I can swap you a couple of different Stapelaids in exchange.
Thank you for the Euphorbia ID. I will research it further but at a glance, I think that is what mine is also.
The kitty photo is 'shy' Daryl. We found him and his other brother 'worried' Daryl (aka sleeps with dogs) back in June and brought them home to the woods with the other five cats that live here. Think I'm a glutton for punishment? lol