Peas thrive in organic rich, well-drained soil in full sun. Planted in early spring, as soon as the soil can be worked, peas germinate in seven to 10 days. Dan Drost, from the Utah State University Extension, recommends planting peas when soil temperatures reach 40 degrees Fahrenheit. These cool-season vegetables prefer temperatures below 80 degrees Fahrenheit. Planting them early so they mature before hot weather arrives in your area produces healthy vines and an abundant crop of peas in your garden. Requiring relatively little care other than weeding or mulching, peas do require consistent water.
Water peas in the early morning when temperatures are cool. This provides the pea garden with moisture to start the day. Moisture loss due to evaporation is minimal at this time, making effective use of your water supply.
Saturate the soil to the root level once a week. Peas typically require 1 inch of rain a week. If your area does not receive adequate rain, supplemental watering is necessary. Light, frequent watering is not recommended as it causes roots to form near the surface of the soil.
Keep soil moist, particularly during flowering and fruit set. Dry soil at this time inhibits blooms and reduces the size of developing pods. Pods fill out quickly when provided with adequate moisture.