Light

Purple passion plant does best in  partial bright sunlight, filtered sunlight (as through a sheer curtain), or indirect sunlight. A window with northern exposure or with morning sun is a good location. Afternoon sun is usually too strong and may cause sun damage or stress. Too little light, on the other hand, leads to leggy growth.

Soil

Good drainage is key for purple passion plant to stay healthy. Put some pebbles in the bottom of the container and use a well-draining indoor potting mix, such as a commercial mix with vermiculite.

Water

Water the purple passion plant regularly during the active growth season and reduce watering in winter to prevent root rot. The soil should feel slightly moist to the touch, not wet or soggy.

Temperature and Humidity

Purple passion plant is native to Indonesia and Java and does not tolerate extremes in temperature. Keep the plant away from cold drafts near windows and air-conditioning. Humidity can be an issue as the velvety hairs on the leaves trap water, which may lead to leaf rot. Purple passion plant should never be misted for that reason. Also, keep it away from houseplants that require humid conditions. In high humidity, cut back on watering to avoid too much moisture and use a dehumidifier to reduce dampness.