Wait until the danger of frost has passed in your area before planting Roma beans. Like all beans, Roma beans are extremely sensitive to cold and frost and likely die from prolonged exposure.
Choose a place that gets full sunlight and where the soil is fertile and well-drained.
Add 5-10-10 fertilizer at 3 pounds per 100 square feet before you plant your bean seeds.
Plant Roma bean seeds 4 to 6 inches apart in a row. Separate the rows by 30 to 36 inches each. Plant the seeds 1 inch deep in the soil.
Water thoroughly right after planting to a depth of 6 inches or wait and plant the seeds on a day following a heavy rain.
Plant your beans at intervals of every two to four weeks until early August if you have space in your garden. Roma beans take about 55 days to mature. Pull up old plants and replace with new ones once you harvest. Succession planting allows you to have a continuous supply of beans during the summer.
Sidedress your Roma beans before they bloom with with ammonium nitrate, using 1 pound per 100 feet of row. Sidedressing means placing the fertilizer 2 to 4 inches next to your row of vegetables leaving it on top of the soil rather than digging it into the soil.