Question
I Live in LasVegas Nevada. I got bought a pack of mix wildflowers seeds with Anuals and Perennials (Cornflower, Painted Daisy, Plains Coropsis, Cosmos Pinkie,Purple Coneflower, California Poppy, Banketflower, Common Sunflower, Prairie Blazing Star, Sweet Alyssum, Purple Prairie Clover, Dairy Pink, Cow Cockle, Catchfly, Crimson Clover and Moss Verbena) So far thier 3-7 feet high. I also have 1Tomato plant(16ft high),1Dahlias, 3Petunias(store bought).  
1.But anyways what kind of butterflies wold be attracted to my yard if I live in LasVegas, Nevada.

2.Are my store bought packets of seeds growing well for 2 months and 3-6ft high.  

Answer
Hi Michelle,
Thanx for your questions.  

1.  I cannot tell you what kind of butterflies will be in your Las Vegas, Nevada area.  I am not a butterfly expert however, the folks at your University of Nevada Cooperative Extension Service in Las Vegas can probably help you with that.  Here is a link:
http://www.unce.unr.edu/counties/clark/

2.  It sounds to me like your wild flowers are coming along nicely.  The perenials such as coriopsis, blazing star and purple coneflower are perennial and will come back year after year.  

I hope this helps.
Tom