Asclepius tuberosa and monarchs

Albany, ME(Zone 4b)

Is asclepius tuberosa as useful to monarchs (host to caterpillar) as the common red flowered variety?

tia
las

Reno, NV(Zone 6b)

Asclepius tuberosa is the common red one. Sometimes its yellow or orange colored.

Lucketts, VA(Zone 7a)

Never known A. tuberosa to be red, just orange and very rarely yellow. Common milkweed is pink.

Reno, NV(Zone 6b)

Okay red-orange.

Anne Arundel,, MD(Zone 7b)

link for you to ask or research at
http://www.monarchwatch.org/

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