Black-eyed peas are available in bush and vine varieties. Vine types require supports such as a trellis or stakes to keep their vines off of the ground. Bush varieties are generally easier to grow but require more space.
A sandy, fertile well drained soil is best. Add aged compost before planting. The soil be neutral to slightly acidic - a soil pH of 5.5 – 6.5 is best. [See Tracking and Adjusting Soil pH]
WHERE TO GROW
Black Eyed Peas simply will not tolerate cold or frost. Warm climates are needed. If planting in a region that is borderline so far as temperature goes - direct sunlight is best- if planting in a hot southern region partial shade is best. Grown in hot regions , they will tolerate direct sunlight - but require more frequent watering.
Avoid planting Black eyed peas , or any peas or beans for that matter in succession with other legumes / beans. Good companion plants are strawberries, cucumbers, melons and celery . Avoid planting near to, or in succession with onions or garlic.
See - Companion Planting
Do not even think about planting them until any danger of a late frost has passed. They simply will not tolerate cool damp weather. They also do not transplant well, if you start Black-eyed peas indoors, it is advisable to do so in peat pots that can placed directly into the soil without disturbing the root system. You might also consider using black plastic mulch to warm the soil.
They can be Direct seeded into your garden once the danger of frost is gone and soil temperatures reach at least 65° F. Sow seeds for your particular variety as instructed on the seed packet, usually about 1 ½ inches deep. Bush varieties tend to need a little more space between plants.
Regular watering is needed , don't drown them , just keep them watered when rainfall is not sufficient. During drought and dry spells Frequent, light watering is best. Try to keep the soil uniformly moist, but the leaves dry to avoid fungal diseases.
Fish emulsion, compost tea or an organic fertilizer after seedlings emerge and monthly throughout the growing season will help. Don't use high nitrogen fertilizers this plant fixes nitrogen into the soil - excessive nitrogen can be harmful.