Sedum Lineare – Care and Propagation Guide

Sedum Lineare in a brown pot on a garden

The succulent Sedum Lineare, also known as Carpet Sedum or Sea Urchin Stonecrop, is a species native to East Asia, mainly in southeastern China and Japan.

It is known for its spreading growth and shrub-like appearance, which makes it quickly carpet the pot as soon as it enters its adult stage. Additionally, it is an excellent option for people living in places with temperatures below 0°C as it has excellent cold tolerance.

In this guide you will learn all the information you need to know about the characteristics, care and propagation of Sedum Lineare.

Table

Main characteristics

  • Light: semi-shade to full sun
  • Height: grows up to 10-15 cm tall and 30-60 cm wide
  • Soil: fast draining
  • Watering: normal
  • Minimum temperature: -20°C
  • Propagation: by seeds, shoots, and leaf or stem cuttings
  • Origin: Southeastern China and Japan
  • Common names: carpet sedum and sea urchin stonecrop
  • Price: $3-10 USD

Sedum Lineare is part of the Crassulaceae family.

It grows in a bush-like form with leaves of intense green color when exposed to direct sunlight or during winter. When mostly cultivated in semi-shade, its leaves acquire a less saturated green tone.

Sedum Lineare in hanging cone like pots
Photo by @wandaoyola

It is a medium-sized succulent that can grow up to 10-15 cm tall and 30-60 cm wide.

In late spring and early summer, it produces small star-shaped yellow flowers.

Sedum Lineare or Carpet Sedum Care

Light

For Sedum Lineare, it is recommended to provide direct sunlight for at least 3 to 4 hours a day or indirect sunlight for 5 to 7 hours. This will help the leaves maintain their compact shape and prevent possible etiolation.

Always remember that if the nursery where you bought it had it protected from the sun under a shade cloth or something similar, it is important not to expose it to this amount of sun immediately but to allow it to gradually acclimate, little by little until it gets used to it.

Once it is adapted to being in direct sun for several hours, you can expose it to the normal number of hours. It even has no problem with direct midday sun in cold climates or temperate climates with a greater tendency to cold.

However, as each space and lighting and temperature conditions are different, it is important to pay attention to these three points with even greater priority than what I mentioned above:

  • When its leaves have a light green tone, it means it needs more sunlight, as its normal color is a darker and more intense green.
  • Additionally, if you notice that between each row of leaves, they begin to separate a lot and the rosette begins to elongate, it will also be a sign that they need more sun.
  • If the leaves begin to show burns (black spots) or appear wrinkled despite being adequately watered, it means there is an excess of sunlight, and it is advisable to reduce the exposure time a little.

Watering

As for watering, like other succulents, Sedum Lineare retains a lot of water in both its stems and leaves.

However, since its leaves are not thick, it is a species with very low tolerance to excess moisture. Therefore, it is essential to exercise caution when watering this succulent to avoid overwatering and causing it to rot.

You should always wait until the substrate is completely dry before watering it again. Never water it when the substrate is still damp because it could start to rot or suffer irreversible damage.

As a standard for places without extreme climates, a normal watering routine for the Sedum Lineare would be every 7-10 days during spring and summer, and every 3-4 weeks during winter.

However, it is always important to check the moisture in the substrate with even greater priority than any routine. If the substrate were to be completely dry before then, it would be time to water it.

Sedum Lineare in a clay cup
Photo by @colores_de_malva

If you want to intensify the color of its leaves, you can slightly reduce its water intake without allowing it to become dehydrated. For example, if you normally water it every 10 days, you can wait a couple of days between each watering, and this will intensify its color. This technique is called "stressing" the plant.

Soil

Sedum Lineare, like most succulents, adapts relatively well to any soil as long as it has good drainage to prevent waterlogging.

In addition to potting soil, your soil mixture should include something looser or porous such as gravel, volcanic rock, or tree bark. This will prevent the plant from retaining too much water and help its roots grow easily.

In general, the ideal average soil mix should have the following approximate proportions:

  • 40% of universal soil with worm humus
  • 30% of gravel, volcanic rock, tree bark, or a mixture of all
  • 20% of peat or perlite
  • 10% of river sand
  • Optional: A little ground eggshell and activated aquarium charcoal to prevent fungal growth

Of course, the proportions of each material can vary depending on the temperature and humidity of the place where you live.

But if you cannot find all the materials, don't worry. The important thing is always to maintain a higher percentage of inorganic materials to have a well-ventilated, light, rapidly draining soil that is not too high in nutrients.

  • Organics: peat, coconut fiber, worm humus, compost, etc.
  • Inorganics: gravel, volcanic rock, perlite, vermiculite, sand, etc.

Additionally, having a pot with several holes will greatly help with even more drainage.

Temperature

The ideal temperature for good growth and flowering of the Graptosedum Bronze is between 18°C and 25°C. However, it can tolerate higher and lower temperatures.

In terms of its cold hardiness, it can withstand some days at temperatures close to 0°C without major problems. It even tolerates temperatures as low as -20°C but not for an extended period (not more than 1 or 2 days).

If exposed to these temperatures for a longer period of time, it will most likely suffer irreversible damage and even die.

Sedum Lineare in a hanging pot
Photo by @nuevavidacs

How to propagate Sedum Lineare or Carpet Sedum

Sedum Lineare can be propagated by leaves, seeds, and stem cuttings, but the most common and effective option is through stem cuttings.

It is also common to do so with its leaves, since this succulent propagates well through this method, only that growth is slower than with the cuttings and shoots method.

There are even people that choose to use seed propagation, but this method is not commonly used as it is it is more complicated and time consuming than the previous ones.

Below, I explain how to reproduce this Carpet Sedum by each method:

Leaf propagation

Since the leaves of Sedum Lineare are very small and have limited water reserves, this method is a slow option with a lower success rate. However, it is possible to propagate this succulent through leaf cuttings when the process is done correctly.

Here is a step-by-step explanation of how to propagate this Carpet Sedum from leaves:

  1. Detach the leaf: You must carefully remove the leaf, making sure to completely remove it from its base and leaving no fragments on the stem. It is best to use a lower leaf. Try to do it as if you were turning it - from left to right and vice versa - the margin of error is much lower than when you simply pull it with force and in one direction.
  2. Place it in a pot or container: Place the leaf in a pot or container that has been previously disinfected with alcohol. The substrate should be at least 4 centimeters deep. When you put the leaf, place it upside down to allow the roots to grow, they can penetrate under the substrate and avoid direct sunlight. Another option is to slightly bury the leaf in the substrate. If you do it this way, you would avoid covering the roots in step 4.
  3. Put the pot in a place with indirect light: Although in its normal state this succulent does not have problems with direct sunlight, when you are propagating it from leaves, it is not recommended to expose it, especially in the early stages of its growth.
  4. Cover the roots and water the substrate: When the roots begin to grow, they must be covered with substrate and given normal care: good lighting and watering every time the substrate is dry.
  5. If you propagated several, transplant to individual pots: Over time, the plant will grow more until it has a stem and the mother leaf will wither and drop away naturally. Once it has shed, if you propagated it with other leaves, it will be time to transplant it to a small individual pot for it to continue its growth with more space. If you propagated it alone, simply remove the mother leaf to avoid pests and continue giving it normal care recommended for this succulent.

Note: In case you made the wrong cut, and a portion of the leaf remains on the stem, the reproduction will not work. Therefore, you will have to cut another leaf to propagate and dispose of the one you cut wrongly.

If you want to learn more about this method of propagation, the most recommended materials, common issues, and how to solve them, I recommend our comprehensive guide on how to propagate succulents from leaves.

Stem cuttings propagation

This method is the most effective for propagating Sedum Lineare, excluding shoots propagation, which is a natural process, and we cannot do much to control it.

Stem cuttings, being pairs of leaves along with their stem, usually grow roots in a short period of time.

Follow these steps to propagate this Carpet Sedum by stem cuttings:

  1. Choose the cutting: When selecting a cutting to propagate, it is advisable to choose one that is not too small, it is best to select a well-formed and mature cutting, this will promote easier and faster root development.
  2. Separate the cutting: Once chosen, separate the cutting very carefully using a knife, scissors or cutter previously sterilized with alcohol. It is important to ensure that the cut made on the cutting is as straight as possible, this facilitates the wound healing process and helps the cutting to generate roots faster once planted in the soil.
  3. Remove leaves from the stem’s base: Alternatively, once you cut the cutting, remove the lower leaves to leave the base of the stem free to facilitate root generation, with 1 or 2 cm will be enough.
  1. Let the wound dry: As the wound remains moist, it is advisable to let the cutting dry for 1 or 2 days until its callus forms. To promote healing, you can leave it in a well-ventilated area, away from direct sunlight and in a vertical position, such as hanging or propped up.
  2. Place the cutting into a pot: Once the cutting has healed, place it into a pot filled with soil. Wait 5-7 days before watering to allow the cutting to develop stronger and healthier roots while continuing to heal.
Stem cuttings propagation of Carpet Sedum
Photo by @entergreen81

After the first watering, continue to care for the plant as previously mentioned.

Seed propagation

You can get Sedum Lineare seeds by buying them at a specialized store or through natural pollination of the plant's flowers.

The steps to follow to propagate this Carpet Sedum by seeds are:

  1. Prepare the soil: You must prepare a draining soil and sterilize it by watering it with boiling water. This is to kill any fungi or bacteria that might be there.
  2. Place it in a container with a lid: Once the soil has cooled, place it inside a container, preferably transparent and with a lid. This is to simulate the greenhouse effect.
  3. Mix it with a less dense material: As a recommendation, mix the soil with small portions of a less dense material such as sawdust, coconut fiber or rice husk. This will make the soil a little looser and lighter, allowing the roots to penetrate and grow more easily, with less stress on the plant.
  4. Place the seeds and water the soil regularly: Once the soil is ready, drop (not bury) the seeds in it. To make them germinate, you should always keep them well hydrated and with abundant filtered light, such as near a window. It is important to avoid placing the seeds in direct sunlight during this process.

Note: The container must have holes to avoid waterlogging and watering should be done preferably with a spray bottle. Furthermore, it is important to ensure that the soil is at least 3-4 cm deep, this will provide enough room for the roots to grow and develop properly.

Seed propagation of succulents
Photo by @brodyplants

The seeds usually germinate after 1 to 2 weeks and are ready for transplanting after about 2 to 3 months.

What are your thoughts on the Sedum Lineare?

As you have seen, due to its spreading growth that covers the pot and its bush-like appearance, Sedum Lineare is a very attractive succulent and a good choice to combine with other succulents, especially in early stages.

Furthermore, its impressive cold resistance of up to -20°C makes it an excellent option for those who live in places with extreme cold and are usually unable to cultivate succulents.

If this applies to you and you are interested in other succulents with good cold resistance, take a look at Sedum Dasyphyllum, Graptopetalum Paraguayense, and Echeveria Affinis. They are other recommended options for these climates, although their resistance extends up to -6°C.

If you liked this article, please consider sharing it with other succulent enthusiasts on your social networks. We will be thrilled if it reaches a wider audience and provides more people with valuable insights on the cultivation and propagation of the Sedum Lineare, the famous Carpet Sedum.

All the best taking care of your plants!

Sources and cover image:

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Luis Camacho

I'm passionate about traveling, trekking and gardening. In this blog i want to share everything I learn throughout my journey and help you get the best of your plants.

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