Find a sunny area for your plant to grow in. Plants such as the pink coral pea vine need at least six hours of sunlight per day and grow better if they are exposed to even more. If you wish to cultivate a vine plant, put the plant in a sunny area next to a wall or a trellis to maximize its potential.
Fertilize the the plant with a potassium-based fertilizer. This encourages flower growth as opposed to green foliage growth. Make sure the bed in which the plant is growing is damp. Add around 1/2 to 1 inch of fertilizer and spread it evenly over the soil.
Water the plant thoroughly once a week in the initial stage. Use a watering can or garden hose to achieve even water distribution. Other than during watering, the soil should not be waterlogged but remain drained and damp. When the plant is mature, it can survive some drought and frost conditions, but in its juvenile stages, make sure to keep it watered at all times.
Weed the soil around the base of the plant as often as is necessary. It is essential to keep the soil weed free as weeds steal water and nutrients from the developing plant and also attract aphids and other types of parasites, which could be harmful to the pea vine. Use common pesticides to eradicate insects.
Prune regularly and carefully after flowering to ensure even flower coverage of any structure you are trying to conceal with the plant. Pruning after flowering will promote compact and structured flower growth.