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Tradescantia, also known as Inch Plant, is an incredibly popular houseplant – and for good reason! These beauties are easy to grow and provide gorgeous foliage.
Tradescantia is a genus of herbaceous perennial plants native to the Americas that are grown mainly for their ornamental foliage. While the Tradescantia genus includes several outdoor cottage garden perennials, the genus is most famous for the tropical Tradescantias (Inch Plants), which are extremely popular as indoor houseplants.
Tradescantia plants thrive in rich soil with lots of moisture, humid air, and bright indirect light. They also grow very quickly and are highly favored as indoor plants because of how easy they are to care for. Read on to learn all about Tradescantias!
Tradescantia plants are native to the Americas, ranging from Southern Canada to Northern Argentina. There are about 75 different species, each with a varying native area. Most types of Tradescantia cultivated as houseplants are native to Central and South America, including Tradescantia zebrina, Tradescantia fluminensis, Tradescantia pallida, and Tradescantia spathacea.
The different species of Tradescantia vary in appearance from one another. In general, they grow about 6-12 inches in height and have a width of 1 to 2 feet. Tradescantia plants grow fleshy oval or lance-shaped leaves that can be blue/green, gray/silver, or purple/burgundy, depending on the type. These plants produce small flowers that grow in oyster-like clusters, giving this plant its “Oyster Plant” nickname (particularly Tradescantia spathacea). The flowers produced by these plants are typically purple, white, or pink.
Tradescantia houseplants are commonly called Inch Plants. The Inch Plant nickname comes from the rate of how fast the plants can grow. They really do seem to grow an inch a day! There is also about an inch between each leaf, so the plants appear to grow an inch at a time.
Hardy species of Tradescantia are commonly referred to as Spiderwort plants. These cottage garden perennials are grown in partial shade areas of temperate outdoor garden beds. They are common at the front of border gardens where their small purple flowers peek out gracefully from the long strap-like leaves.
Here are some popular species of Tradescantia to grow in containers as houseplants:
Tradescantia zebrina: These plants are named because of the zebra-like pattern on their leaves. They have two silver stripes on the outer edges and purple new growth on the central axis. The underneath of their leaves is a deep magenta. This plant is more commonly called “burgundy” and it is available at most greenhouses. These are the most commonly known (and most commonly photographed) species.
Tradescantia pallida: This plant, also known as the “purple heart” is characterized by its long, pointed, purple leaves. They grow small three-petaled, flowers that are white, pink, or purple. These are common houseplants because of their pretty appearance, but also because they are known to improve air quality by filtering out pollutants and other organic compounds.
Tradescantia fluminensis: Also known as Striped Inch Plant, this plant is characterized by its cream leaves with yellow striations.
Tradescantia spathacea: Also known as Moses In The Cradle, these Inch Plants have long narrow leaves. Many types have green leaves with purple undersides. Flowers are white.
Tradescantia sillamontana: This plant is also known as the White Velvet Inch Plant. This plant has leaves that are covered in wooly white hairs that give it a soft, velvety texture. These plants produce magenta-pink flowers during the summer.
Here are some popular named cultivars of Tradescantia to grow at home:
Tradescantia plants are among the easiest houseplants to grow. These plants are not fussy and are a great choice for new plant parents and beginner indoor gardeners.
Water your Tradescantia once a week, or as soon as the top half of the soil becomes dry. When you water your plant, you should wet it until the water runs out of the bottom of the pot. Tradescantias are susceptible to root rot, so it is important to ensure the planter is draining properly.
While it’s fine to get the foliage and stems wet once in a while, it’s best to water the soil surface directly. Moist foliage tends to invite fungal disease. Water droplets can also leave stains on the ornamental foliage of this plant. Use a watering can with a skinny spout to reach the soil surface without pouring water all over the leaves:
Tradescantias are not very picky about their soil and will grow in almost any kind of soil blend. However, these plants really like moisture, so the soil should not be too dry for too long. Use a potting mix that drains out excess moisture well, but doesn’t try out too terribly quickly.
Tradescantias grow best in bright indirect light. If the plants do not get enough light, their beautiful leaf markings will begin to fade. Prolonged periods of low light can make the plant weak, limp, and susceptible to disease. Tradescantia grown indoors will likely benefit from supplemental lighting from a simple LED plant lightbulb or grouped with other houseplants under an LED grow light.
However, if these plants have sudden exposure to direct sunlight after a period of darkness, their leaves can be scorched. Tradescantia plants can be grown in direct sunlight in cooler climates, especially if slowly exposed to slightly more and more sunlight each day until they become acclimatized.
Tradescantias do very well in most indoor settings. They thrive in temperatures between 65 and 75 degrees Fahrenheit, but they can tolerate and do well in hotter temperatures as well.
These plants should not be kept in areas where the temperature frequently gets below 50 degrees, or their leaves will become damaged and discolored. Temperatures below freezing can kill many types of Tradescantia plants (or at least kill any above-ground foliage).
Tradescantias love humidity and moisture. The best way to increase humidity levels for your plants is to use an area humidifier, as pebble trays and misting tend not to be as effective over the long term. You can use a regular ultrasonic mist humidifier or opt for a specialty humidifier from a plant store (like the Humidifier by Canopy from The Sill).
Although this is not necessary, fertilizing your Tradescantia can help it grow better. If you chose to fertilize, you should do so in the spring and summer in accordance with the directions on the fertilizer. Here are some high-quality organic fertilizers for Tradescantia plants:
Pruning is not necessary for the growth of this plant, but many like to prune their Tradescantias to keep up a busy, clean appearance. Remove dead or dying foliage with sharp, clean scissors.
Repotting can be a vital step for the health and growth of your Tradescantia. However, the process of re-potting can be super tricky. There are a few things that you need to take into consideration when re-potting your Tradescantia.
The best time to repot Tradescantia is during the spring, which is when they are coming out of winter dormancy and starting to actively grow. Repotting at the beginning of their growing season allows the roots to establish themselves in the new potting mix and planter pot.
Furthermore, you should keep in mind that, just because your plant is growing, it does not mean that you need to automatically put it in a new pot. When your plant is growing, it is a good sign that it is thriving in its current environment. To know when you need to re-pot your plant, you should look for signs and clear indicators, such as roots poking out of the drainage holes and growth that is stalled or slowed down.
When changing containers, it is important to find a container that has drainage holes and can drain easily to prevent root rot. To get the correct size, you should select a pot or container that is about 1-2 inches bigger than the current pot, both in width and depth.
Re-potting your plant is a careful process. Here are the steps to make re-potting smooth and successful:
Tradescantia plants are easily propagated. Many who grow these plants are known to give away several other plants from propagation because they cannot keep up with how fast the plants can grow and propagate.
Propagating a Tradescantia is relatively simple because the roots take easily from the cuttings of the plant. If you wish to propagate, make sure that your cutting is from a mature, healthy plant. Take sharp scissors and cut the stem just below the node where a leaf is beginning to grow. For best results, you should have a cutting of 4 to 6 inches.
You can propagate these plants in both water and soil. For propagating in water, you should fill a cup or a jar with water that is lukewarm. After pulling the leaves off the bottom part of the stem, place the cutting in the water and place it on a windowsill that gets lots of sunlight. However, you should avoid intense sunlight, such as from south-facing windowsills, which can damage the plants.
When propagating in water, make sure that the roots are always submerged. Once the roots are a few inches long (usually after 3-4 weeks) you can transfer it to a pot with soil.
If you are propagating with soil, the process is slightly different, and the process is more involved than propagating with soil. To propagate, you should first fill your container with soil, then remove the leaves from the bottom half of your stem. Then you should place your cuttings in the soil. You can place several cuttings in the same pot. After the cuttings are planted, you should cover the pot with plastic (secured around the pot with a rubber band). This pot should be placed in bright but indirect light.
When new growth appears (usually after about a month) then you can safely remove the plastic bag and your plants will grow.
Here are some common questions from Tradescantia plant parents:
What is the life cycle of the Tradescantia plant?
Tradescantia plants are perennial plants. Perennial plants are plants that live longer than two years and are used to distinguish from biannual or annual plants which don’t last very long. Tradescantia plants are sometimes seen as immortal plants, because they last for several years, and can be propagated easily to produce more and grow.
How fast do Tradescantia plants grow?
Tradescantia plants are sometimes called “inch plants” which comes from the fact that they have the ability (with proper care) for their stems to grow an inch every week.
These plants are commonly used as hanging plants because the leaves drape over the side of pots and continue to grow that way. Their fast-growing nature also contributes to their beautiful appearance as hanging houseplants.