Plant cypress vine seeds near a trellis or other structure that the vines can climb when the soil is warm, or start them indoors six to eight weeks before the last expected frost. Keep the soil moist until the seedlings are well-established. The plants can withstand brief dry spells, but they grow best with plenty of moisture.

Organic mulch helps keep the soil evenly moist and may prevent seeds from taking root where they fall. If left to take root at will, cypress vines become weedy.