Looks like milkweed flower to me. On the Butterfly weed the leaves
are narrow. Looks like yours are, but hard to tell.

Our wild milkweed here has the wide leaves, and the flowers are very similar, but pink. They are also fabulous fragrant - are yours fragrant?? Pretty flowers!!

Nancy.

looks like milkweed - asclepias curassavica variety.

Thank you very much for the confirmation.

Xuan

Yes, It is indeed milkweed. Here is my similar plant with a visitor:
{{gwi:529151}}

kay