Water the newly-planted hummingbird vine to keep the soil moist, but not saturated, until it produces new growth. At that time, the vine has become established, so allow the top 3 inches of soil to dry before you water again.
Fertilize the hummingbird vine before it blooms in the spring with a high phosphorus fertilizer, such as 5-15-5. Apply it at the rate stated on the label, and water to a depth of 6 inches after you fertilize the vine.
Prune the hummingbird vine to keep it to the size you prefer. You can safely cut anywhere on the vine, and it will recover.