By our calculations, you should look at sowing Yellow about 14 days after your last frost date.
Said to have originated in Peru, and later become very popular in Mexico.
Maicoba, Maiocoba, Mayo Coba, Yellow Peru, Peru
Yellow Peruvian, Peruvian, Peruano, Mayocoba, Canary, Canaria, Canario, Azufrado
http://www.garden-wiki.org/index.php5?topic=PERUANO%20BEAN