By our calculations, you should look at sowing Ashworth about 14 days after your last frost date.
When ears fill out, check regularly for sweetness; open-pollinated corn does not last long in the field at peak ripeness. Peel back the husk and press your thumb into a kernel; if it pops open and yields a sweet milky fluid it’s ready.
According to FEDCO Seeds, Fred Ashworth of St. Lawrence Nurseries originally named his variety “‘Rat Selected’ in honor of the rodents who broke into his seed storage room and alerted him to certain kernels that they preferred.”
Rat Selected