Grow Passiflora caerulea in full sun to light shade on wet but well-drained soil next to a protected wall. Passiflora caerulea is a self-clinging plant. Athough it needs an obelisk or trellis to support its ascent. In the spring and summer, Passiflora incarnata needs to be watered. Every two weeks, and in dry weather, it needs to be watered frequently.