Though it does have some specific needs, including careful watering and regular fertilizing, caring for purple passion vine is not terribly complicated or time-consuming. Cared for properly, it will provide years of beauty as an indoor plant.
Light
This plant does best in partial bright sunlight, filtered sunlight (as through a sheer curtain), or indirect sunlight. A northern exposure window, or a spot hanging next to a window should give it plenty of light, or a spot where it gets morning sun. Afternoon sun is probably too strong and may cause sun damage or stress.
Soil
This plant needs good drainage to stay healthy. You can put some pebbles in the bottom of the container to ensure this. A well draining indoor potting mix should be sufficient as a planting medium. Commercial mixes with vermiculite are usually the most common choice for indoor hanging plants.
Water
Regular watering during the active growth season to keep the soil slightly moist helps this vine stay healthy. However, watering should be reduced in winter to prevent root rot. It’s very important to avoid overwatering the purple passion vine; touch the soil and make sure it feels slightly moist, not wet or soggy. Some pebbles in the bottom of your container can help, and be sure there are drainage holes also.
Temperature and Humidity
Extremes in temperature would put too much stress on the purple passion vine, so you will want to check and make sure the window you hang it next to doesn’t have a draft in winter. Humidity can be an issue as the velvety hairs on the leaves can trap water and this may lead to leaf rot normally. For this reason you will want to display this plant away from houseplants that require humid conditions. If there is a long heat wave with high humidity, you may want to cut back on watering to avoid too much moisture, and using a dehumidifier in damp conditions will also help.
Fertilizer
The purple passion vine benefits from regular fertilizer application. This means every two weeks using a diluted plant food in the active growth period (spring to fall), and once per month in winter. You should dilute the plant food to 50% of its normal strength. Mix only what you need for the current feeding. If you notice leaves yellowing or wilting, or other unusual coloration or conditions, cut back on the amount and frequency of fertilization. You can also try diluting the fertilizer more. Too much fertilizer can lead to nutrient burn, and it’s better to fertilize too little than too much. Observe your plant closely to see how it responds to its fertilizer schedule.
Pruning
The growth rate of purple passion vine is fairly average, but sometimes the plant will get a bit “leggy” and benefits from having the vines pinched back regularly to encourage a neater appearance and fuller growth. You can also save the vine cuttings to propagate more plants! When pruning, cut vines between two and five inches from the soil surface, The plant will rejuvenate quickly and have a nice healthy, bushy growth habit with regular pruning.
Potting and Repotting Purple Passion Vine
As your purple passion vine grows you may want to repot it. However, this plant continues to thrive even when root-bound, so you probably won’t need to repot it as often as other houseplants. You will want to repot this plant in fresh soil if there is any sign of root rot. Trim the rotted areas to give it a fresh start and water only lightly for the first week or two after repotting.
Propagating Purple Passion Vine
This plant can be easily propagated from cuttings, then planted in potting mix and kept moist. It takes about one or two weeks for roots to appear.
Common Pests and Plant Diseases
The purple passion vine can be somewhat susceptible to aphids, whiteflies, spider mites, scales, and mealybugs. Check frequently for pests. A spay application of neem oil is effective against all these pests. It is also prone to rot if it gets too wet, and this may also lead to mildew problems, but this is fairly rare. If the plant is showing damage from infestation or rot, cut off all damaged parts. If the plant continues to have issues, you can easily start a new one from a healthy cutting.
