By our calculations, you should look at sowing Blue Lake Bush about 14 days after your last frost date.
6-7 inch pods
The species name vulgaris is from the Latin vulgus (“the multitude, the masses”) + -āris, and means “common”, “usual”, or “commonly known” 1.
Developed in 1961 from the Pole Blue Lake.2
green beans
1 Wiktionary entry for vulgaris
2 rareseeds.com/blue-lake-bush-274-bean/