lovemyhouse I might be nosing in at the wrong place but yours are here ,
If Dallas , you are as it says
The chart I placed the link to says these are your native Milkweed , Couple of others likely grow where you are
Green Antelopehorn Milkweed)
Asclepias viridis
Dry areas and prairies.
Asclepias asperula)
Desert and sandy areas
Asclepias oenotheroides)
Sandy or rocky prairies and fields.
I saw some Antelopehorn , for 6.89 for 10 seeds ,, little pricey and some there ,, I would ask here on the plant and seed trading thread