December 13, 2024 Peter van Dijk

Cactus Propagation

Cacti are popular houseplants because of their unique appearance, easy care, and the ability to propagate them. A beautiful way to expand your collection or save a beloved cactus is by taking cuttings. In this blog, we answer the most frequently asked questions about cactus propagation. From when and how to do this, to specific species and care, you will find everything you need to know here.

When to Propagate a Cactus?

The best time to propagate a cactus is during the growing season, usually in spring or early summer. Cacti are actively growing at that time, which increases the chance of successful root formation. Avoid taking cuttings in the winter, when the plant is dormant.

How to Propagate a Cactus?

Taking cuttings from a cactus is a fun way to propagate your plants. Here is a step-by-step guide to help you:

Supplies for Cactus Cuttings:

A healthy cactus
Sharp and clean knife or pruning shears
Gloves (to avoid thorns)
Pot with well-draining cactus soil
A dry place for drying the cuttings
Rooting hormone powder (optional)

Step-by-step plan for Cactus Cuttings:

1. Choose a healthy cactus cutting:

Look for a shoot or segment that is healthy and firm.
For cacti consisting of segments (such as the prickly pear), you can use a whole segment.
For columnar cacti, you can cut off part of the stem.

2. Cut the cutting:

Use a clean, sharp knife to cut a cutting. This prevents infections.
Cut the cutting at an angle or straight, depending on the cactus species.

3. Let the cutting dry:

Place the cutting in a dry, warm place out of direct sunlight.
Allow the wound to heal and a callus to form (this usually takes 3-10 days). This prevents rotting.

4. Prepare the pot:

Fill a pot with well-draining cactus soil.

Ensure the pot has holes in the bottom for good drainage.

5. Plant the cutting:

Gently push the cutting into the soil (about 2-3 cm deep, depending on the size of the cutting).

If you have rooting hormone powder, you can apply it to the bottom of the cutting before planting it.

6. Watering:

Do not water the cutting at first. Wait until roots start to grow (usually 1-2 weeks).

After that, you can water lightly, but avoid overwatering.

7. Be patient:

Place the pot in a light spot, but not in direct bright sunlight.

Roots will grow within a few weeks to months. You can gently pull to feel if the cutting is firmly in the soil.

With this method, you can successfully propagate and multiply your own cacti. Good luck!

Long Cactus Cuttings

For tall cacti, such as columnar cacti, it is best to cut off a piece from the top to make a healthy cutting. Use a sharp and clean knife and cut off a section at least 10-15 cm long; the larger the cutting, the better the chance of survival. Let the cut piece dry for a few days to a week in a warm, dry place so that a firm callus can form to prevent rotting. The remaining part of the cactus can usually sprout again, so you not only have a new cutting but can also allow the original plant to recover. As soon as the cutting has dried out, you can plant it in well-draining cactus soil and wait for it to form new roots.

Broken Cactus Cuttings

If your cactus has broken off accidentally, you don't have to worry to make; the broken piece can often serve perfectly well as a cutting. First, check if the broken part is healthy and shows no signs of rot. Then, let the piece dry for a few days to a week in a warm, dry place so that the wound can form a callus. This protects it against infections and rotting when you plant it later. Once the piece is well dried, you can place it in a pot with well-draining cactus soil. Do not water at first and let the cutting quietly form roots; after a few weeks, it will start to grow and you can gradually water it.
Can You Propagate a Cactus in Water?

Although many houseplants can be successfully propagated in water, this is generally not a good method for cacti. Cacti are adapted to dry conditions and tend to rot when left in water for extended periods. Instead, it is much more effective to place a cactus cutting directly into well-draining soil after drying. This traditional method gives the cutting the best chance to form roots without the risk of mold or rot. If you still want to experiment with water, ensure that only the tip of the cutting touches the water and monitor the conditions closely, but be prepared that this may be less successful.

Which Cactus Species Can You Propagate?

Not all cacti can be propagated in the same way. Here are some popular species:

Euphorbia Cactus Propagation

Euphorbias look like cacti, but are technically succulents. Wear gloves, as the sap can be irritating. Allow the wound to dry thoroughly before planting the cutting.

Rhipsalis Cuttings

Rhipsalis, or coral cacti, are epiphytic cacti that are easy to propagate. Cut a piece of the stem and place it directly in soil or water. This species tolerates water cuttings better than others.

Schlumbergera Cactus Cuttings

Schlumbergera Cactus, like the Christmas Cactus, can easily be propagated by breaking off a segment of the stem. Let the wound dry and then place the cutting in moist soil.
Caring for a Cactus Cutting

Proper care is essential for the success of your cutting. Here are some tips:

Light: Place the cutting in a bright spot, but avoid direct sunlight.

Water: Only water once the roots have developed, usually after 2-4 weeks.

Potting soil: Use special cactus soil for optimal drainage.

Patience: It may take a while for the cutting to start growing, but with proper care you will be rewarded with a new plant.

Read more: Cactus Care

Propagating cacti is not only a fun activity, but also a sustainable way to multiply your favorite houseplant. Whether you want to save a broken piece or create a new plant, with these tips you are guaranteed success!