Plant ID Tropical milkweed

(Question)

The attached flowering plant is supposed to attract butterflies.  Can you assist in naming it for me?

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(Answer)

I believe your plant is a Tropical Milkweed, possibly the Silky Gold variety (Asclepias curassavica ‘Silky Gold’) which has a solid golden yellow flower as opposed to the more common red and yellow flower.

Tropical Milkweed is a host plant for the Monarch and Queen butterflies and a food source for their larvae.  This South American native has naturalized in many tropical and sub-tropical areas.  It has a longer flowering period than our own native milkweeds but Tropical Milkweed will not withstand the Canadian winter and must be treated as an annual or brought indoors and treated as a houseplant.

Note that the milky sap from the plant can be irritating to human skin, so be sure to wear gloves when handling the plant.  To read more about Tropical Milkweed, check out the information on the North American Butterfly Association website, see link below.

http://nababutterfly.com/tropical-milkweed/