Updated: July 11, 2023

Air plants, also known as Tillandsia, are unique and fascinating plants that can be grown both indoors and outdoors. One popular variety is the Harrisii air plant, which is known for its thick, silver-green leaves and beautiful bloom. While many people choose to grow their Harrisii air plants indoors, they can also thrive in an outdoor setting. In this article, we will explore how to successfully grow Harrisii air plants outdoors.

Choose the Right Location

When growing Harrisii air plants outdoors, it is important to choose the right location. These plants prefer bright, indirect light, so look for a spot that receives partial shade or filtered sunlight. Too much direct sunlight can cause the leaves to burn and turn brown. Additionally, avoid placing your Harrisii air plant in a location that is prone to strong winds, as this can damage the delicate leaves.

Provide Adequate Air Circulation

As the name suggests, air plants require good air circulation to thrive. When growing Harrisii air plants outdoors, make sure you choose a location with adequate airflow. This will help prevent moisture from building up on the leaves and minimize the risk of rot or fungal diseases. If you live in an area with high humidity, consider placing your Harrisii air plant in a location where it can benefit from natural breezes or use a small fan to provide air movement.

Watering Techniques

One of the most important aspects of growing Harrisii air plants outdoors is proper watering. Unlike traditional potted plants, air plants obtain nutrients and moisture through their leaves rather than roots. To water your Harrisii air plant, simply mist it with a fine spray bottle 2-3 times a week. Alternatively, you can soak the plant in room temperature water for about 30 minutes once a week. After watering, allow the plant to dry completely before placing it back in its outdoor location. Overwatering can lead to root rot, so make sure not to leave your Harrisii air plant sitting in water for extended periods.

Fertilizing Routine

While air plants can survive without regular fertilization, providing them with a nutrient boost can promote healthier growth and more vibrant blooms. When growing Harrisii air plants outdoors, use a diluted liquid fertilizer specifically formulated for air plants. Apply the fertilizer once every two to three months during the growing season (spring and summer). Be sure to follow the instructions on the fertilizer bottle and avoid over-fertilizing, as this can cause damage to the plant.

Temperature and Humidity

Harrisii air plants thrive in warm temperatures ranging from 60 to 80 degrees Fahrenheit (15 to 27 degrees Celsius). They are not frost-tolerant, so if you live in a colder climate, it is best to bring your Harrisii air plant indoors during the winter months. Additionally, these plants prefer moderate humidity levels between 40% and 60%. If you live in a dry climate, you can increase humidity by misting the plant more frequently or placing it on a tray filled with water and pebbles.

Protecting from Pests

Just like any other plant, Harrisii air plants are susceptible to pests such as aphids, mealybugs, and spider mites. Regularly inspect your plants for any signs of infestation, such as webbing or sticky residue on the leaves. If you notice any pests, remove them by gently wiping the leaves with a damp cloth or using an organic insecticidal soap. Avoid using chemical pesticides as they can harm the delicate foliage of air plants.

Repotting and Propagation

As your Harrisii air plant grows, it may eventually outgrow its current container. Repotting is necessary when the plant starts to become crowded or when the old growth becomes too large. To repot your air plant, gently remove it from its current container and shake off any excess soil or debris. Place the plant in a new container with fresh potting medium, such as a mixture of orchid bark and sphagnum moss. Make sure to provide enough space for the roots to spread out comfortably.

Propagation of Harrisii air plants can be done through division or by collecting and planting the seeds produced by the plant’s flowers. Division involves separating the offsets, or baby plants, from the main plant when they have reached a reasonable size. To do this, carefully separate the offsets from the mother plant using clean, sharp scissors. Allow the offsets to dry for a day or two before planting them in their own containers.

Conclusion

Growing Harrisii air plants outdoors can be a rewarding and enjoyable experience. By providing them with the right location, adequate air circulation, proper watering, and occasional fertilization, you can watch these unique plants thrive in an outdoor setting. Remember to protect them from pests, adjust temperature and humidity levels accordingly, and repot or propagate when necessary. With proper care and attention, your Harrisii air plants will reward you with their stunning beauty and resilience.