The pencil cactus (Euphorbia tirucalli) is a succulent native to Africa and parts of India. The plant gets its name from its long, thin, pencil-like stems. Pencil cactus is easy to grow and care for, making it a popular plant for indoor and outdoor gardens. If you’re looking to add a pencil cactus to your collection, propagation is a great way to do it. Fortunately, we are here to guide you through the process of propagating your very own pencil cactus.
So, how do you propagate pencil cactus? Pencil cactus can be propagated either through stem cuttings or seed germination. Stem cuttings are the most common propagation method, as they are easy to do and have a high success rate. To take a stem cutting, use a sharp knife or pair of scissors to cut a 2-3″ section from the end of a healthy stem. Remove any leaves from the cutting, then allow it to callus over for a few days before potting it in well-draining cactus soil. Water the cutting lightly and place it in a bright, sunny spot. Keep an eye on the cutting and water it when the soil begins to dry. In 4-6 weeks, you should see new growth appearing at the base of the cutting. If you’re more ambitious, you can propagate pencil cactus from seed.
This blog post discusses everything you need to know about propagating a pencil cactus. Read on to learn more.
Why Is Pencil Cactus Propagation Important?
Before we dive into the details of how to propagate pencil cactus, let’s talk about why propagation is essential.
The pencil cactus is a slow-growing plant that can take years to reach its full size. Propagation allows you to create new plants without waiting for the parent plant to produce offsets (or baby plants).
Not only does propagation save you time, but it’s also a great way to preserve the health of your existing plants. You’re not damaging the parent plant when you take cuttings from a pencil cactus. Many gardeners find that their plants benefit from removing some of their stems.
Different Ways to Propagate a Pencil Cactus
Now that you know a little about why propagation is essential, let’s talk about the different ways you can propagate pencil cactus.
As mentioned earlier, stem cuttings and seed germination are the two most common propagation methods. We’ll discuss both of these methods in more detail below.
Propagating Pencil Cactus from Stem Cuttings
Propagating pencil cactus from stem cuttings is the most common method of propagation. It’s also the most straightforward method, as there is no need to worry about germinating seeds.
To take a stem cutting, use a sharp knife or pair of scissors to cut a 2-3” section from the end of a healthy stem. Remove any leaves from the cutting, then allow it to callus over for a few days before potting it in well-draining cactus soil.
Water the cutting lightly and place it in a bright, sunny spot. Keep an eye on the cutting and water it when the soil begins to dry. In 4-6 weeks, you should see new growth appearing at the base of the cutting.
The stem cutting you obtain can be rooted in water or soil. Each method has its advantages and disadvantages, which we will discuss below.
Rooting Pencil Cactus Stem Cuttings in Water
Rooting pencil cactus stem cuttings in water is a popular method among gardeners, as it is effortless. The main advantage of this method is that it allows you to see when the roots are growing, as they will be visible in the water.
The main disadvantage of this method is that it can be tricky to transition the rooted cutting into the soil. This is because the roots that develop in water are very delicate and can easily be damaged.
To root your stem cutting in water, fill your glass or jar with room-temperature water and place the cutting inside. Make sure that the bottom inch or so of the stem is submerged.
Place the glass or jar in a bright, sunny spot and check on it every few days to ensure the water level hasn’t dropped too low. When it does, add more water to keep the stem submerged.
It can take anywhere from 2-8 weeks for roots to develop. Once they do, you can transplant the cutting into the soil.
Rooting Pencil Cactus Stem Cuttings in Soil
Rooting pencil cactus stem cuttings in the soil is a bit more complex than rooting them in water, but it’s doable.
The main advantage of this method is that there is no need to transition the cutting into soil, as it will already be rooted in soil when you take it.
However, the main disadvantage of rooting your pencil cactus cutting in the soil is that it can be difficult to tell when the roots are growing, as they will be hidden beneath the ground.
We recommend using a pot at least 6″ wide with drainage holes if you decide to root your stem cutting in soil. This will give the roots plenty of room to grow.
Fill the pot with well-draining cactus soil, then make a small hole in the center of the soil. Place the stem cutting in the hole, so the bottom inch or so is buried.
Water the soil lightly, then place the pot in a bright, sunny spot. Keep an eye on the soil and water it when it begins to dry. In 4-6 weeks, you should see new growth appearing at the base of the cutting.
Propagating Pencil Cactus from Seed
You can try propagating pencil cactus from seed if you’re more adventurous. This method’s main advantage is gratifying, as you watch the plant grow from a tiny seed into a mature cactus.
But remember that propagating pencil cactus from seed takes time and patience. It can also be challenging to get the seeds to germinate, so don’t get discouraged if it doesn’t happen on the first try.
To propagate pencil cactus from seed, you will need to obtain a fresh batch of seeds. You can purchase the seeds online or at a local nursery. Once you have your seeds, sow them in a well-draining cactus soil mix.
Place the pot in a bright, sunny spot and water the soil lightly. Keep an eye on the soil and water it when it begins to dry.
It can take anywhere from 2-8 weeks for the seeds to germinate. Once they do, you can transplant the seedlings into individual pots.
Propagating Pencil Cactus by Division
Besides stem cuttings and seeds, division is another popular method for propagating pencil cactus. This is an excellent option if you already have a mature pencil cactus that you want to propagate.
The main advantage of this method is that it’s easy to accomplish. The main disadvantage is that it can be challenging to find a mature pencil cactus that is big enough to divide.
If you do find a mature pencil cactus that you want to divide, the first thing you need to do is carefully remove it from its pot. Once it’s out of the pot, you can see its root system.
Using a sharp knife, carefully divide the root ball into two or three sections. Make sure that each section has a good amount of roots attached to it.
Once you have divided the root ball, you can replant the sections in individual pots. Water the soil lightly and place the jars in a bright, sunny spot.
Keep an eye on the soil and water it when it begins to dry. In 4-6 weeks, you should see new growth appearing at the base of the plant.
Caring for a Newly Propagated Pencil Cactus
Once you have successfully propagated your pencil cactus, it’s time to start caring for it. The good news is that these plants are easy to care for and require little attention.
The most important thing to remember when caring for a newly propagated pencil cactus is not to overwater it. These plants are highly susceptible to root rot, so it’s essential to ensure the soil is always on the dry side.
Water the soil when it begins to dry out, then allow the water to drain completely before putting the pot back in its place.
Another critical thing to remember is to protect the plant from frost. These plants are native to warm, arid climates and cannot tolerate cold temperatures. Keeping your pencil cactus indoors is best if you live in an area with frosty winters.
Place the pot in a bright, sunny spot and keep an eye on the soil. Water it when it begins to dry out and fertilize it once a month during the growing season. Your newly propagated pencil cactus should thrive and grow into a healthy plant with proper care.
Pencil cacti are beautiful, easy-to-care-for plants that make great houseplants or additions to any garden. And the best part about them is that they are straightforward to propagate!
With just a few simple tools and materials, you can have a new pencil cactus plant in no time. Thanks for reading, and happy gardening!
Last update on 2023-07-26 / Affiliate links / Images from Amazon Product Advertising API