Common name: Candle Bush, Empress Candle Plant, Candletree
Plant Link: http://plantsdatabase.com/go/371/
I'm in Estero, Fl...between Naples and Ft Myers. I'm looking for whatever plant is attracting the great number of Cloudless Sulphurs and Orange-Barred Sulphurs on a friend's property. I can't find any cassias with which I'm familiar, in the whole area but SOMETHING is bringing them in! Since seeing your photo I'll go back and check the property again. There are a lot of trees/shrubs with similar leaves...similar but not the same, and no yellow flowers. Would this tree be flowering now, in February?
We're going back to Canada in a month but in the meanwhile I'm working at establishing a butterfly garden on our friend's ranch. Thanks for the i.d. photo!