What kind of fertilizer should I use on my peas?

Some say none. If you are going to fertilize, use something low in nitrogen. I used a “blooming and rooting” fertlizer (9-59-8) before I saw any flowers, and within days I had tons of blooms, and soon I had peas.

When do I plant and harvest peas?

Plant in early spring, 5 weeks before the last frost. In Utah County, this wll be late-March or early-April. To stagger your harvest, you can plant the peas for about a month (until the frost date).
For a fall planting, plant 10 weeks before your first fall frost date. In Utah County, this will be mid- [...]

Growing Peas Reference

Growing Peas reference sheet from the Utah State Extension Service